diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 5362d05883..9067c8ccef 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -750,11 +750,13 @@ abstract class Kernel implements KernelInterface, TerminableInterface
         return preg_replace_callback("{'([^']*)(".preg_quote($rootDir)."[^']*)'}", function ($match) use ($filesystem, $cacheDir) {
             $prefix = isset($match[1]) && $match[1] ? "'$match[1]'.__DIR__" : "__DIR__";
 
-            if ('.' === $relativePath = rtrim($filesystem->makePathRelative($match[2], $cacheDir), '/')) {
+            $relativePath = rtrim($filesystem->makePathRelative($match[2], $cacheDir), '/');
+
+            if ($relativePath === '.') {
                 return $prefix;
             }
 
-            return $prefix.".'/".$relativePath."'";
+            return $prefix . ".'/" . $relativePath . "'";
         }, $content);
     }