diff --git a/src/Symfony/Component/Debug/DebugClassLoader.php b/src/Symfony/Component/Debug/DebugClassLoader.php
index 01104ea21e..7d99b634bb 100644
--- a/src/Symfony/Component/Debug/DebugClassLoader.php
+++ b/src/Symfony/Component/Debug/DebugClassLoader.php
@@ -179,7 +179,7 @@ class DebugClassLoader
             }
 
             if (in_array(strtolower($refl->getShortName()), self::$php7Reserved)) {
-                trigger_error(sprintf('%s uses a reserved class name (%s) that will break on PHP 7 and higher', $name, $refl->getShortName()), E_USER_DEPRECATED);
+                @trigger_error(sprintf('%s uses a reserved class name (%s) that will break on PHP 7 and higher', $name, $refl->getShortName()), E_USER_DEPRECATED);
             } elseif (preg_match('#\n \* @deprecated (.*?)\r?\n \*(?: @|/$)#s', $refl->getDocComment(), $notice)) {
                 self::$deprecated[$name] = preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]);
             } else {
diff --git a/src/Symfony/Component/HttpKernel/Tests/Logger.php b/src/Symfony/Component/HttpKernel/Tests/Logger.php
index 017518a305..54300960d3 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Logger.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Logger.php
@@ -91,7 +91,7 @@ class Logger implements LoggerInterface
      */
     public function emerg($message, array $context = array())
     {
-        trigger_error('Use emergency() which is PSR-3 compatible', E_USER_DEPRECATED);
+        @trigger_error('Use emergency() which is PSR-3 compatible', E_USER_DEPRECATED);
 
         $this->log('emergency', $message, $context);
     }
@@ -101,7 +101,7 @@ class Logger implements LoggerInterface
      */
     public function crit($message, array $context = array())
     {
-        trigger_error('Use critical() which is PSR-3 compatible', E_USER_DEPRECATED);
+        @trigger_error('Use critical() which is PSR-3 compatible', E_USER_DEPRECATED);
 
         $this->log('critical', $message, $context);
     }
@@ -111,7 +111,7 @@ class Logger implements LoggerInterface
      */
     public function err($message, array $context = array())
     {
-        trigger_error('Use error() which is PSR-3 compatible', E_USER_DEPRECATED);
+        @trigger_error('Use error() which is PSR-3 compatible', E_USER_DEPRECATED);
 
         $this->log('error', $message, $context);
     }
@@ -121,7 +121,7 @@ class Logger implements LoggerInterface
      */
     public function warn($message, array $context = array())
     {
-        trigger_error('Use warning() which is PSR-3 compatible', E_USER_DEPRECATED);
+        @trigger_error('Use warning() which is PSR-3 compatible', E_USER_DEPRECATED);
 
         $this->log('warning', $message, $context);
     }
diff --git a/src/Symfony/Component/PropertyAccess/Exception/UnexpectedTypeException.php b/src/Symfony/Component/PropertyAccess/Exception/UnexpectedTypeException.php
index 5b87244f9d..3bf8fa4b5e 100644
--- a/src/Symfony/Component/PropertyAccess/Exception/UnexpectedTypeException.php
+++ b/src/Symfony/Component/PropertyAccess/Exception/UnexpectedTypeException.php
@@ -36,7 +36,7 @@ class UnexpectedTypeException extends RuntimeException
                 $path->getElement($pathIndex)
             );
         } else {
-            trigger_error('The '.__CLASS__.' constructor now expects 3 arguments: the invalid property value, the '.__NAMESPACE__.'\PropertyPathInterface object and the current index of the property path.', E_USER_DEPRECATED);
+            @trigger_error('The '.__CLASS__.' constructor now expects 3 arguments: the invalid property value, the '.__NAMESPACE__.'\PropertyPathInterface object and the current index of the property path.', E_USER_DEPRECATED);
 
             $message = sprintf(
                 'Expected argument of type "%s", "%s" given',