diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 34e951b4fc42..13156a72ce27 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Bridge/Doctrine/phpunit.xml.dist b/src/Symfony/Bridge/Doctrine/phpunit.xml.dist
index c006d232219a..24f92f2ab8e2 100644
--- a/src/Symfony/Bridge/Doctrine/phpunit.xml.dist
+++ b/src/Symfony/Bridge/Doctrine/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Bridge/Monolog/phpunit.xml.dist b/src/Symfony/Bridge/Monolog/phpunit.xml.dist
index 8a60f06a7a31..28905908b189 100644
--- a/src/Symfony/Bridge/Monolog/phpunit.xml.dist
+++ b/src/Symfony/Bridge/Monolog/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Bridge/PhpUnit/phpunit.xml.dist b/src/Symfony/Bridge/PhpUnit/phpunit.xml.dist
index 9b64b02947c0..816cfe4927ed 100644
--- a/src/Symfony/Bridge/PhpUnit/phpunit.xml.dist
+++ b/src/Symfony/Bridge/PhpUnit/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Bridge/ProxyManager/phpunit.xml.dist b/src/Symfony/Bridge/ProxyManager/phpunit.xml.dist
index 60980be9e531..f280e037fec0 100644
--- a/src/Symfony/Bridge/ProxyManager/phpunit.xml.dist
+++ b/src/Symfony/Bridge/ProxyManager/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Bridge/Twig/composer.json b/src/Symfony/Bridge/Twig/composer.json
index d66be3d49e28..3bc0aa6d0cdd 100644
--- a/src/Symfony/Bridge/Twig/composer.json
+++ b/src/Symfony/Bridge/Twig/composer.json
@@ -22,7 +22,7 @@
     "require-dev": {
         "symfony/asset": "~2.7",
         "symfony/finder": "~2.3",
-        "symfony/form": "~2.7.25|^2.8.18",
+        "symfony/form": "~2.7.26|^2.8.19",
         "symfony/http-kernel": "~2.3",
         "symfony/intl": "~2.3",
         "symfony/routing": "~2.2",
diff --git a/src/Symfony/Bridge/Twig/phpunit.xml.dist b/src/Symfony/Bridge/Twig/phpunit.xml.dist
index 10c0be114271..642b7d19d8b7 100644
--- a/src/Symfony/Bridge/Twig/phpunit.xml.dist
+++ b/src/Symfony/Bridge/Twig/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Bundle/DebugBundle/phpunit.xml.dist b/src/Symfony/Bundle/DebugBundle/phpunit.xml.dist
index 90ec0a5dba51..3df3f74a7d9a 100644
--- a/src/Symfony/Bundle/DebugBundle/phpunit.xml.dist
+++ b/src/Symfony/Bundle/DebugBundle/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Bundle/FrameworkBundle/composer.json b/src/Symfony/Bundle/FrameworkBundle/composer.json
index cd615c31d11b..9ed3b0807d97 100644
--- a/src/Symfony/Bundle/FrameworkBundle/composer.json
+++ b/src/Symfony/Bundle/FrameworkBundle/composer.json
@@ -40,7 +40,7 @@
         "symfony/dom-crawler": "^2.0.5",
         "symfony/intl": "~2.3",
         "symfony/security": "~2.6",
-        "symfony/form": "~2.7.25|^2.8.18",
+        "symfony/form": "~2.7.26|^2.8.19",
         "symfony/class-loader": "~2.1",
         "symfony/expression-language": "~2.6",
         "symfony/process": "^2.0.5",
diff --git a/src/Symfony/Bundle/FrameworkBundle/phpunit.xml.dist b/src/Symfony/Bundle/FrameworkBundle/phpunit.xml.dist
index 1d25eeb3304c..cd0ded87eee1 100644
--- a/src/Symfony/Bundle/FrameworkBundle/phpunit.xml.dist
+++ b/src/Symfony/Bundle/FrameworkBundle/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Bundle/SecurityBundle/phpunit.xml.dist b/src/Symfony/Bundle/SecurityBundle/phpunit.xml.dist
index a7fdc326c457..8636f70c187a 100644
--- a/src/Symfony/Bundle/SecurityBundle/phpunit.xml.dist
+++ b/src/Symfony/Bundle/SecurityBundle/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Bundle/TwigBundle/phpunit.xml.dist b/src/Symfony/Bundle/TwigBundle/phpunit.xml.dist
index 9a8c38f26ef3..5fed35774218 100644
--- a/src/Symfony/Bundle/TwigBundle/phpunit.xml.dist
+++ b/src/Symfony/Bundle/TwigBundle/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Bundle/WebProfilerBundle/phpunit.xml.dist b/src/Symfony/Bundle/WebProfilerBundle/phpunit.xml.dist
index 2bcccd6667a2..e678afd54f2c 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/phpunit.xml.dist
+++ b/src/Symfony/Bundle/WebProfilerBundle/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Asset/phpunit.xml.dist b/src/Symfony/Component/Asset/phpunit.xml.dist
index b66906d6dab3..906578a81d9f 100644
--- a/src/Symfony/Component/Asset/phpunit.xml.dist
+++ b/src/Symfony/Component/Asset/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/BrowserKit/phpunit.xml.dist b/src/Symfony/Component/BrowserKit/phpunit.xml.dist
index d76b2b98afd8..fa6d06a8068c 100644
--- a/src/Symfony/Component/BrowserKit/phpunit.xml.dist
+++ b/src/Symfony/Component/BrowserKit/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/ClassLoader/phpunit.xml.dist b/src/Symfony/Component/ClassLoader/phpunit.xml.dist
index 4856db5be65d..5158b22f27c8 100644
--- a/src/Symfony/Component/ClassLoader/phpunit.xml.dist
+++ b/src/Symfony/Component/ClassLoader/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Config/phpunit.xml.dist b/src/Symfony/Component/Config/phpunit.xml.dist
index 3fe6fd87c849..36ef339fd78e 100644
--- a/src/Symfony/Component/Config/phpunit.xml.dist
+++ b/src/Symfony/Component/Config/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Console/Tests/Helper/LegacyTableHelperTest.php b/src/Symfony/Component/Console/Tests/Helper/LegacyTableHelperTest.php
index 7c3130945366..9fdc1fb38439 100644
--- a/src/Symfony/Component/Console/Tests/Helper/LegacyTableHelperTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/LegacyTableHelperTest.php
@@ -34,7 +34,7 @@ protected function tearDown()
     }
 
     /**
-     * @dataProvider testRenderProvider
+     * @dataProvider renderProvider
      */
     public function testRender($headers, $rows, $layout, $expected)
     {
@@ -50,7 +50,7 @@ public function testRender($headers, $rows, $layout, $expected)
     }
 
     /**
-     * @dataProvider testRenderProvider
+     * @dataProvider renderProvider
      */
     public function testRenderAddRows($headers, $rows, $layout, $expected)
     {
@@ -66,7 +66,7 @@ public function testRenderAddRows($headers, $rows, $layout, $expected)
     }
 
     /**
-     * @dataProvider testRenderProvider
+     * @dataProvider renderProvider
      */
     public function testRenderAddRowsOneByOne($headers, $rows, $layout, $expected)
     {
@@ -83,7 +83,7 @@ public function testRenderAddRowsOneByOne($headers, $rows, $layout, $expected)
         $this->assertEquals($expected, $this->getOutputContent($output));
     }
 
-    public function testRenderProvider()
+    public function renderProvider()
     {
         $books = array(
             array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'),
diff --git a/src/Symfony/Component/Console/phpunit.xml.dist b/src/Symfony/Component/Console/phpunit.xml.dist
index ae0dcbeaba41..7e7ff5ba8925 100644
--- a/src/Symfony/Component/Console/phpunit.xml.dist
+++ b/src/Symfony/Component/Console/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/CssSelector/phpunit.xml.dist b/src/Symfony/Component/CssSelector/phpunit.xml.dist
index 14a320c873c1..65ff1827a3ba 100644
--- a/src/Symfony/Component/CssSelector/phpunit.xml.dist
+++ b/src/Symfony/Component/CssSelector/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Debug/phpunit.xml.dist b/src/Symfony/Component/Debug/phpunit.xml.dist
index e99c4ddf4460..12e58612bc5f 100644
--- a/src/Symfony/Component/Debug/phpunit.xml.dist
+++ b/src/Symfony/Component/Debug/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/DependencyInjection/phpunit.xml.dist b/src/Symfony/Component/DependencyInjection/phpunit.xml.dist
index 86252d0456ba..781f767d5448 100644
--- a/src/Symfony/Component/DependencyInjection/phpunit.xml.dist
+++ b/src/Symfony/Component/DependencyInjection/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/DomCrawler/phpunit.xml.dist b/src/Symfony/Component/DomCrawler/phpunit.xml.dist
index d15dd6a48ed1..ad714a8fd81c 100644
--- a/src/Symfony/Component/DomCrawler/phpunit.xml.dist
+++ b/src/Symfony/Component/DomCrawler/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/EventDispatcher/phpunit.xml.dist b/src/Symfony/Component/EventDispatcher/phpunit.xml.dist
index ae0586e0b33d..b3ad1bdf5a8e 100644
--- a/src/Symfony/Component/EventDispatcher/phpunit.xml.dist
+++ b/src/Symfony/Component/EventDispatcher/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/ExpressionLanguage/phpunit.xml.dist b/src/Symfony/Component/ExpressionLanguage/phpunit.xml.dist
index 183770651e26..e7ecd6fb2b0b 100644
--- a/src/Symfony/Component/ExpressionLanguage/phpunit.xml.dist
+++ b/src/Symfony/Component/ExpressionLanguage/phpunit.xml.dist
@@ -10,6 +10,8 @@
          stopOnFailure="false"
          syntaxCheck="false"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Filesystem/phpunit.xml.dist b/src/Symfony/Component/Filesystem/phpunit.xml.dist
index d066ed796986..7bba6fc2f0da 100644
--- a/src/Symfony/Component/Filesystem/phpunit.xml.dist
+++ b/src/Symfony/Component/Filesystem/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Finder/phpunit.xml.dist b/src/Symfony/Component/Finder/phpunit.xml.dist
index 631e570b9479..0e1a8669beab 100644
--- a/src/Symfony/Component/Finder/phpunit.xml.dist
+++ b/src/Symfony/Component/Finder/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Form/phpunit.xml.dist b/src/Symfony/Component/Form/phpunit.xml.dist
index 1c4acf476238..b834e2f33a5b 100644
--- a/src/Symfony/Component/Form/phpunit.xml.dist
+++ b/src/Symfony/Component/Form/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/HttpFoundation/phpunit.xml.dist b/src/Symfony/Component/HttpFoundation/phpunit.xml.dist
index 9ffdb43a2d74..c1d61f8bf1da 100644
--- a/src/Symfony/Component/HttpFoundation/phpunit.xml.dist
+++ b/src/Symfony/Component/HttpFoundation/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/HttpKernel/phpunit.xml.dist b/src/Symfony/Component/HttpKernel/phpunit.xml.dist
index b29969b36fe2..e0de769dd7af 100644
--- a/src/Symfony/Component/HttpKernel/phpunit.xml.dist
+++ b/src/Symfony/Component/HttpKernel/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Intl/Tests/Locale/LocaleTest.php b/src/Symfony/Component/Intl/Tests/Locale/LocaleTest.php
index 94572e6f2a60..5ee414a1c250 100644
--- a/src/Symfony/Component/Intl/Tests/Locale/LocaleTest.php
+++ b/src/Symfony/Component/Intl/Tests/Locale/LocaleTest.php
@@ -153,6 +153,8 @@ public function testSetDefault()
     public function testSetDefaultAcceptsEn()
     {
         $this->call('setDefault', 'en');
+
+        $this->assertSame('en', $this->call('getDefault'));
     }
 
     protected function call($methodName)
diff --git a/src/Symfony/Component/Intl/phpunit.xml.dist b/src/Symfony/Component/Intl/phpunit.xml.dist
index 9e7ce2f0b264..a3fcd7c9a912 100644
--- a/src/Symfony/Component/Intl/phpunit.xml.dist
+++ b/src/Symfony/Component/Intl/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Locale/phpunit.xml.dist b/src/Symfony/Component/Locale/phpunit.xml.dist
index 0d9b637cc78d..19f26f880fd4 100644
--- a/src/Symfony/Component/Locale/phpunit.xml.dist
+++ b/src/Symfony/Component/Locale/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/OptionsResolver/phpunit.xml.dist b/src/Symfony/Component/OptionsResolver/phpunit.xml.dist
index abf84614bcf7..7e04e6049127 100644
--- a/src/Symfony/Component/OptionsResolver/phpunit.xml.dist
+++ b/src/Symfony/Component/OptionsResolver/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Process/phpunit.xml.dist b/src/Symfony/Component/Process/phpunit.xml.dist
index 788500084abf..d38846730d72 100644
--- a/src/Symfony/Component/Process/phpunit.xml.dist
+++ b/src/Symfony/Component/Process/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/PropertyAccess/phpunit.xml.dist b/src/Symfony/Component/PropertyAccess/phpunit.xml.dist
index b0b20c1bd946..ebfc5648cb36 100644
--- a/src/Symfony/Component/PropertyAccess/phpunit.xml.dist
+++ b/src/Symfony/Component/PropertyAccess/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Routing/phpunit.xml.dist b/src/Symfony/Component/Routing/phpunit.xml.dist
index b69f066ac1b2..bcc0959522cb 100644
--- a/src/Symfony/Component/Routing/phpunit.xml.dist
+++ b/src/Symfony/Component/Routing/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Security/Acl/phpunit.xml.dist b/src/Symfony/Component/Security/Acl/phpunit.xml.dist
index b1ea04797a37..35adff6cd5ba 100644
--- a/src/Symfony/Component/Security/Acl/phpunit.xml.dist
+++ b/src/Symfony/Component/Security/Acl/phpunit.xml.dist
@@ -10,6 +10,8 @@
          stopOnFailure="false"
          syntaxCheck="false"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Security/Core/phpunit.xml.dist b/src/Symfony/Component/Security/Core/phpunit.xml.dist
index 2dc341abcba0..658f462af2ec 100644
--- a/src/Symfony/Component/Security/Core/phpunit.xml.dist
+++ b/src/Symfony/Component/Security/Core/phpunit.xml.dist
@@ -10,6 +10,8 @@
          stopOnFailure="false"
          syntaxCheck="false"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Security/Csrf/phpunit.xml.dist b/src/Symfony/Component/Security/Csrf/phpunit.xml.dist
index f5b1e65c7192..f5ad399666df 100644
--- a/src/Symfony/Component/Security/Csrf/phpunit.xml.dist
+++ b/src/Symfony/Component/Security/Csrf/phpunit.xml.dist
@@ -10,6 +10,8 @@
          stopOnFailure="false"
          syntaxCheck="false"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Security/Http/phpunit.xml.dist b/src/Symfony/Component/Security/Http/phpunit.xml.dist
index 8d636e93f1be..9720d96e163d 100644
--- a/src/Symfony/Component/Security/Http/phpunit.xml.dist
+++ b/src/Symfony/Component/Security/Http/phpunit.xml.dist
@@ -10,6 +10,8 @@
          stopOnFailure="false"
          syntaxCheck="false"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Security/phpunit.xml.dist b/src/Symfony/Component/Security/phpunit.xml.dist
index 6b56bf247124..72d84877a977 100644
--- a/src/Symfony/Component/Security/phpunit.xml.dist
+++ b/src/Symfony/Component/Security/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Serializer/phpunit.xml.dist b/src/Symfony/Component/Serializer/phpunit.xml.dist
index 4799e3cf2f1d..ce9af71d90a7 100644
--- a/src/Symfony/Component/Serializer/phpunit.xml.dist
+++ b/src/Symfony/Component/Serializer/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Stopwatch/phpunit.xml.dist b/src/Symfony/Component/Stopwatch/phpunit.xml.dist
index b16dcaebf9a4..f28559a6aa16 100644
--- a/src/Symfony/Component/Stopwatch/phpunit.xml.dist
+++ b/src/Symfony/Component/Stopwatch/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Templating/phpunit.xml.dist b/src/Symfony/Component/Templating/phpunit.xml.dist
index 109584e805db..8be97b57b188 100644
--- a/src/Symfony/Component/Templating/phpunit.xml.dist
+++ b/src/Symfony/Component/Templating/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Translation/phpunit.xml.dist b/src/Symfony/Component/Translation/phpunit.xml.dist
index c25ec5eda694..1fafa4691bc1 100644
--- a/src/Symfony/Component/Translation/phpunit.xml.dist
+++ b/src/Symfony/Component/Translation/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Validator/phpunit.xml.dist b/src/Symfony/Component/Validator/phpunit.xml.dist
index cf8c343863e5..0e82129d79d8 100644
--- a/src/Symfony/Component/Validator/phpunit.xml.dist
+++ b/src/Symfony/Component/Validator/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/VarDumper/phpunit.xml.dist b/src/Symfony/Component/VarDumper/phpunit.xml.dist
index bb16a3a4ec02..1c03ff68d886 100644
--- a/src/Symfony/Component/VarDumper/phpunit.xml.dist
+++ b/src/Symfony/Component/VarDumper/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />
diff --git a/src/Symfony/Component/Yaml/phpunit.xml.dist b/src/Symfony/Component/Yaml/phpunit.xml.dist
index 6bdbea16e642..7c732f8a7835 100644
--- a/src/Symfony/Component/Yaml/phpunit.xml.dist
+++ b/src/Symfony/Component/Yaml/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />