diff --git a/resources/classes/cache.php b/resources/classes/cache.php
index 6a5cfd21c4..d961540348 100644
--- a/resources/classes/cache.php
+++ b/resources/classes/cache.php
@@ -87,7 +87,7 @@ class cache {
 			}
 
 		//return result
-			return $result;
+			return $result ?? null;
 	}
 
 	/**