diff --git a/composer.lock b/composer.lock
index 078b911724d..66668a5c28e 100644
--- a/composer.lock
+++ b/composer.lock
@@ -9,16 +9,16 @@
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@@ -170,7 +170,7 @@
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@@ -798,22 +798,22 @@
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@@ -1143,7 +1143,7 @@
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@@ -1174,7 +1174,7 @@
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@@ -1575,7 +1581,7 @@
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@@ -1623,23 +1629,24 @@
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@@ -1672,24 +1679,24 @@
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@@ -2020,16 +2027,16 @@
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@@ -2075,20 +2082,20 @@
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@@ -2278,7 +2285,7 @@
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@@ -2455,21 +2462,22 @@
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@@ -2532,7 +2540,7 @@
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@@ -2915,6 +2923,33 @@
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@@ -3163,7 +3198,7 @@
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@@ -3219,28 +3254,28 @@
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-                "reference": "0d3c9c4864142dc6a368fa0d952a8b83215e8740",
+                "url": "https://api.github.com/repos/sensiolabs/SensioGeneratorBundle/zipball/ec278c0bd530edf155c4a00900577b5cb80f559e",
+                "reference": "ec278c0bd530edf155c4a00900577b5cb80f559e",
                 "shasum": ""
             },
             "require": {
                 "symfony/console": "~2.7|~3.0",
                 "symfony/framework-bundle": "~2.7|~3.0",
                 "symfony/process": "~2.7|~3.0",
-                "symfony/yaml": "~2.7|~3.0"
+                "symfony/yaml": "~2.7|~3.0",
+                "twig/twig": "^1.28.2|^2.0"
             },
             "require-dev": {
                 "doctrine/orm": "~2.4",
-                "symfony/doctrine-bridge": "~2.7|~3.0",
-                "twig/twig": "~1.18"
+                "symfony/doctrine-bridge": "~2.7|~3.0"
             },
             "type": "symfony-bundle",
             "extra": {
@@ -3267,20 +3302,20 @@
                 }
             ],
             "description": "This bundle generates code for you",
-            "time": "2016-11-07 19:48:31"
+            "time": "2016-12-05 16:01:19"
         },
         {
             "name": "symfony/phpunit-bridge",
-            "version": "v3.2.0",
+            "version": "v3.2.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/phpunit-bridge.git",
-                "reference": "a56acfdb96be7c82f4bcf16b7c77f1960690b0e2"
+                "reference": "65e64a4f99cbaeae718573c3347fbe800f3f6661"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/phpunit-bridge/zipball/a56acfdb96be7c82f4bcf16b7c77f1960690b0e2",
-                "reference": "a56acfdb96be7c82f4bcf16b7c77f1960690b0e2",
+                "url": "https://api.github.com/repos/symfony/phpunit-bridge/zipball/65e64a4f99cbaeae718573c3347fbe800f3f6661",
+                "reference": "65e64a4f99cbaeae718573c3347fbe800f3f6661",
                 "shasum": ""
             },
             "require": {
@@ -3325,7 +3360,7 @@
             ],
             "description": "Symfony PHPUnit Bridge",
             "homepage": "https://symfony.com",
-            "time": "2016-11-25 22:54:21"
+            "time": "2016-12-12 13:31:08"
         }
     ],
     "aliases": [],
diff --git a/var/SymfonyRequirements.php b/var/SymfonyRequirements.php
index 7e7723af318..7e7a99de92d 100644
--- a/var/SymfonyRequirements.php
+++ b/var/SymfonyRequirements.php
@@ -780,7 +780,11 @@ protected function getRealpathCacheSize()
     {
         $size = ini_get('realpath_cache_size');
         $size = trim($size);
-        $unit = strtolower(substr($size, -1, 1));
+        $unit = '';
+        if (!ctype_digit($size)) {
+            $unit = strtolower(substr($size, -1, 1));
+            $size = (int) substr($size, 0, -1);
+        }
         switch ($unit) {
             case 'g':
                 return $size * 1024 * 1024 * 1024;