diff --git a/Filesystem.php b/Filesystem.php
index d30dfd2c7a..1dc6ac8177 100644
--- a/Filesystem.php
+++ b/Filesystem.php
@@ -41,7 +41,7 @@ public function copy($originFile, $targetFile, $override = false)
 
         $this->mkdir(dirname($targetFile));
 
-        if (!$override && is_file($targetFile) && null == parse_url($originFile, PHP_URL_HOST)) {
+        if (!$override && is_file($targetFile) && null === parse_url($originFile, PHP_URL_HOST)) {
             $doCopy = filemtime($originFile) > filemtime($targetFile);
         } else {
             $doCopy = true;