diff --git a/resources/functions.php b/resources/functions.php
index 084e84866c..a69128bf40 100644
--- a/resources/functions.php
+++ b/resources/functions.php
@@ -279,7 +279,7 @@
 			//set default
 				$result = false;
 			//permissions exist
-				if (is_array($_SESSION["permissions"]) && @sizeof($_SESSION['permissions']) != 0) {
+				if (!empty($_SESSION["permissions"]) && is_array($_SESSION["permissions"]) && @sizeof($_SESSION['permissions']) != 0) {
 					//array
 					if (is_array($permission) && @sizeof($permission) != 0) {
 						if ($operator == 'and') {