diff --git a/src/Symfony/Component/Debug/.gitignore b/src/Symfony/Component/Debug/.gitignore
index 38c15605ed..c49a5d8df5 100644
--- a/src/Symfony/Component/Debug/.gitignore
+++ b/src/Symfony/Component/Debug/.gitignore
@@ -1,5 +1,3 @@
 vendor/
 composer.lock
 phpunit.xml
-Tests/ProjectContainer.php
-Tests/classes.map
\ No newline at end of file
diff --git a/src/Symfony/Component/Debug/Debug.php b/src/Symfony/Component/Debug/Debug.php
index c265ba65b2..b147a7c7f4 100644
--- a/src/Symfony/Component/Debug/Debug.php
+++ b/src/Symfony/Component/Debug/Debug.php
@@ -41,7 +41,6 @@ class Debug
         static::$enabled = true;
 
         error_reporting(-1);
-        ini_set('display_errors', 0);
 
         ErrorHandler::register($errorReportingLevel);
         if ('cli' !== php_sapi_name()) {