diff --git a/src/MadeYourDay/Contao/CustomElements.php b/src/MadeYourDay/Contao/CustomElements.php
index e6d7ebf..c7c5f38 100644
--- a/src/MadeYourDay/Contao/CustomElements.php
+++ b/src/MadeYourDay/Contao/CustomElements.php
@@ -604,8 +604,8 @@ public static function loadConfig()
 		$fileFullPath = TL_ROOT . '/' . $filePath;
 
 		$cacheHash = md5(implode(',', array_merge(
-			glob(TL_ROOT . '/templates/rsce_*'),
-			glob(TL_ROOT . '/templates/*/rsce_*')
+			glob(TL_ROOT . '/templates/rsce_*') ?: array(),
+			glob(TL_ROOT . '/templates/*/rsce_*') ?: array()
 		)));
 
 		if (file_exists($fileFullPath)) {