diff --git a/lib/private/urlgenerator.php b/lib/private/urlgenerator.php
index 44b46ef6700711b3761ee3bd7fbb4582b9dc08bb..b7ae8dd0f60d4d984e1da4fc430d3bf532800e1b 100644
--- a/lib/private/urlgenerator.php
+++ b/lib/private/urlgenerator.php
@@ -60,7 +60,7 @@ class URLGenerator implements IURLGenerator {
 			$app_path = \OC_App::getAppPath($app);
 			// Check if the app is in the app folder
 			if ($app_path && file_exists($app_path . '/' . $file)) {
-				if (substr($file, -3) == 'php' || substr($file, -3) == 'css') {
+				if (substr($file, -3) == 'php') {
 
 					$urlLinkTo = \OC::$WEBROOT . '/index.php/apps/' . $app;
 					if ($frontControllerActive) {