diff --git a/src/Symfony/Component/HttpKernel/Bundle/Bundle.php b/src/Symfony/Component/HttpKernel/Bundle/Bundle.php
index 68e1157e4510..8505bbbddd3f 100644
--- a/src/Symfony/Component/HttpKernel/Bundle/Bundle.php
+++ b/src/Symfony/Component/HttpKernel/Bundle/Bundle.php
@@ -223,6 +223,8 @@ private function parseClassName()
     {
         $pos = strrpos(static::class, '\\');
         $this->namespace = false === $pos ? '' : substr(static::class, 0, $pos);
-        $this->name = false === $pos ? static::class : substr(static::class, $pos + 1);
+        if (null === $this->name) {
+            $this->name = false === $pos ? static::class : substr(static::class, $pos + 1);
+        }
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Tests/Bundle/BundleTest.php b/src/Symfony/Component/HttpKernel/Tests/Bundle/BundleTest.php
index ee0c3128f1a2..0e02f2a363b2 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Bundle/BundleTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Bundle/BundleTest.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\HttpKernel\Tests\Bundle;
 
 use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\HttpKernel\Bundle\Bundle;
 use Symfony\Component\HttpKernel\Tests\Fixtures\ExtensionNotValidBundle\ExtensionNotValidBundle;
 use Symfony\Component\HttpKernel\Tests\Fixtures\ExtensionPresentBundle\ExtensionPresentBundle;
 use Symfony\Component\HttpKernel\Tests\Fixtures\ExtensionAbsentBundle\ExtensionAbsentBundle;
@@ -66,4 +67,33 @@ public function testHttpKernelRegisterCommandsIgnoresCommandsThatAreRegisteredAs
         $bundle->setContainer($container);
         $bundle->registerCommands($application);
     }
+
+    public function testBundleNameIsGuessedFromClass()
+    {
+        $bundle = new GuessedNameBundle();
+
+        $this->assertSame('Symfony\Component\HttpKernel\Tests\Bundle', $bundle->getNamespace());
+        $this->assertSame('GuessedNameBundle', $bundle->getName());
+    }
+
+    public function testBundleNameCanBeExplicitlyProvided()
+    {
+        $bundle = new NamedBundle();
+
+        $this->assertSame('ExplicitlyNamedBundle', $bundle->getName());
+        $this->assertSame('Symfony\Component\HttpKernel\Tests\Bundle', $bundle->getNamespace());
+        $this->assertSame('ExplicitlyNamedBundle', $bundle->getName());
+    }
+}
+
+class NamedBundle extends Bundle
+{
+    public function __construct()
+    {
+        $this->name = 'ExplicitlyNamedBundle';
+    }
+}
+
+class GuessedNameBundle extends Bundle
+{
 }