diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php
index 0400efc25e..bfec01aefc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php
@@ -21,7 +21,7 @@ class ContainerDebugCommandTest extends WebTestCase
 {
     public function testDumpContainerIfNotExists()
     {
-        static::bootKernel(['test_case' => 'ContainerDebug', 'root_config' => 'config.yml']);
+        static::bootKernel(['test_case' => 'ContainerDebug', 'root_config' => 'config.yml', 'debug' => true]);
 
         $application = new Application(static::$kernel);
         $application->setAutoExit(false);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/WebTestCase.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/WebTestCase.php
index 3f7bb4c7ee..00eda65709 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/WebTestCase.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/WebTestCase.php
@@ -62,7 +62,7 @@ class WebTestCase extends BaseWebTestCase
             $options['test_case'],
             isset($options['root_config']) ? $options['root_config'] : 'config.yml',
             isset($options['environment']) ? $options['environment'] : strtolower(static::getVarDir().$options['test_case']),
-            isset($options['debug']) ? $options['debug'] : true
+            isset($options['debug']) ? $options['debug'] : false
         );
     }
 
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/WebTestCase.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/WebTestCase.php
index f1d23b6054..9bcbc05324 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/WebTestCase.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/WebTestCase.php
@@ -62,7 +62,7 @@ class WebTestCase extends BaseWebTestCase
             $options['test_case'],
             isset($options['root_config']) ? $options['root_config'] : 'config.yml',
             isset($options['environment']) ? $options['environment'] : strtolower(static::getVarDir().$options['test_case']),
-            isset($options['debug']) ? $options['debug'] : true
+            isset($options['debug']) ? $options['debug'] : false
         );
     }