diff --git a/src/Symfony/Component/ClassLoader/ClassCollectionLoader.php b/src/Symfony/Component/ClassLoader/ClassCollectionLoader.php
index 017d5506a3..47588f76c4 100644
--- a/src/Symfony/Component/ClassLoader/ClassCollectionLoader.php
+++ b/src/Symfony/Component/ClassLoader/ClassCollectionLoader.php
@@ -182,7 +182,7 @@ class ClassCollectionLoader
     {
         $tmpFile = tempnam(dirname($file), basename($file));
         if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $file)) {
-            chmod($file, 0666 & ~umask());
+            @chmod($file, 0666 & ~umask());
 
             return;
         }
diff --git a/src/Symfony/Component/Config/ConfigCache.php b/src/Symfony/Component/Config/ConfigCache.php
index 8fb67d1496..421cb7cc43 100644
--- a/src/Symfony/Component/Config/ConfigCache.php
+++ b/src/Symfony/Component/Config/ConfigCache.php
@@ -101,7 +101,7 @@ class ConfigCache
 
         $tmpFile = tempnam(dirname($this->file), basename($this->file));
         if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $this->file)) {
-            chmod($this->file, 0666 & ~umask());
+            @chmod($this->file, 0666 & ~umask());
         } else {
             throw new \RuntimeException(sprintf('Failed to write cache file "%s".', $this->file));
         }
@@ -110,7 +110,7 @@ class ConfigCache
             $file = $this->file.'.meta';
             $tmpFile = tempnam(dirname($file), basename($file));
             if (false !== @file_put_contents($tmpFile, serialize($metadata)) && @rename($tmpFile, $file)) {
-                chmod($file, 0666 & ~umask());
+                @chmod($file, 0666 & ~umask());
             }
         }
     }
diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index a12f958434..542caeccd5 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -112,7 +112,7 @@ class Filesystem
     public function chmod($files, $mode, $umask = 0000)
     {
         foreach ($this->toIterator($files) as $file) {
-            chmod($file, $mode & ~$umask);
+            @chmod($file, $mode & ~$umask);
         }
     }
 
diff --git a/src/Symfony/Component/HttpFoundation/File/File.php b/src/Symfony/Component/HttpFoundation/File/File.php
index 20a80cafd7..d8ab4ac4fc 100644
--- a/src/Symfony/Component/HttpFoundation/File/File.php
+++ b/src/Symfony/Component/HttpFoundation/File/File.php
@@ -122,7 +122,7 @@ class File extends \SplFileInfo
             throw new FileException(sprintf('Could not move the file "%s" to "%s" (%s)', $this->getPathname(), $target, strip_tags($error['message'])));
         }
 
-        chmod($target, 0666 & ~umask());
+        @chmod($target, 0666 & ~umask());
 
         return new File($target);
     }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/File/MimeType/MimeTypeTest.php b/src/Symfony/Component/HttpFoundation/Tests/File/MimeType/MimeTypeTest.php
index 2990c210ff..7bf10a297e 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/File/MimeType/MimeTypeTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/File/MimeType/MimeTypeTest.php
@@ -84,7 +84,7 @@ class MimeTypeTest extends \PHPUnit_Framework_TestCase
 
         $path = __DIR__.'/../Fixtures/to_delete';
         touch($path);
-        chmod($path, 0333);
+        @chmod($path, 0333);
 
         if (get_current_user() != 'root' && substr(sprintf('%o', fileperms($path)), -4) == '0333') {
             $this->setExpectedException('Symfony\Component\HttpFoundation\File\Exception\AccessDeniedException');
@@ -98,7 +98,7 @@ class MimeTypeTest extends \PHPUnit_Framework_TestCase
     {
         $path = __DIR__.'/../Fixtures/to_delete';
         if (file_exists($path)) {
-            chmod($path, 0666);
+            @chmod($path, 0666);
             @unlink($path);
         }
     }
diff --git a/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmer.php b/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmer.php
index 2406c65a6d..948b3ffd14 100644
--- a/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmer.php
+++ b/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmer.php
@@ -22,7 +22,7 @@ abstract class CacheWarmer implements CacheWarmerInterface
     {
         $tmpFile = tempnam(dirname($file), basename($file));
         if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $file)) {
-            chmod($file, 0666 & ~umask());
+            @chmod($file, 0666 & ~umask());
 
             return;
         }
diff --git a/src/Symfony/Component/HttpKernel/HttpCache/Store.php b/src/Symfony/Component/HttpKernel/HttpCache/Store.php
index 32112e1431..0eae26270b 100644
--- a/src/Symfony/Component/HttpKernel/HttpCache/Store.php
+++ b/src/Symfony/Component/HttpKernel/HttpCache/Store.php
@@ -332,7 +332,7 @@ class Store implements StoreInterface
             return false;
         }
 
-        chmod($path, 0666 & ~umask());
+        @chmod($path, 0666 & ~umask());
     }
 
     public function getPath($key)