diff --git a/extension/ezjscore/classes/ezjscpacker.php b/extension/ezjscore/classes/ezjscpacker.php
index 0a196152865..3068427d8c3 100644
--- a/extension/ezjscore/classes/ezjscpacker.php
+++ b/extension/ezjscore/classes/ezjscpacker.php
@@ -515,7 +515,7 @@ static function fixImgPaths( $fileContent, $file )
                        $newMatchPath .= implode( '/', $cssPathSlice ) . '/';
                    }
                    $newMatchPath .= str_replace( '../', '', $match );
-                   $fileContent = str_replace( $match, $newMatchPath, $fileContent );
+                   $fileContent = preg_replace( "/url\(\s*[\'|\"]?".preg_quote($match, '/')."[\'|\"]?\s*\)/", "url($newMatchPath)", $fileContent );
                }
            }
         }