diff --git a/lib/classes/ActionMenu.php b/lib/classes/ActionMenu.php
index 929c485189e61573600f5de69c7ff0a12d005af5..613bea555c344ccdf984ac547f13e58d72972feb 100644
--- a/lib/classes/ActionMenu.php
+++ b/lib/classes/ActionMenu.php
@@ -354,7 +354,7 @@ class ActionMenu
     protected function getKeyForIndex($index)
     {
         foreach ($this->actions as $key => $value) {
-            if ($value['index'] === $index) {
+            if (!empty($value['index']) && $value['index'] === $index) {
                 return $key;
             }
         }