diff --git a/src/View/Helper/ActiveLinkHelper.php b/src/View/Helper/ActiveLinkHelper.php
index 7511963..6296eaf 100644
--- a/src/View/Helper/ActiveLinkHelper.php
+++ b/src/View/Helper/ActiveLinkHelper.php
@@ -152,13 +152,13 @@ class ActiveLinkHelper extends Helper {
 	protected function _matchesUrlFromArrayTarget(array $current, array $targetUrl) {
 		foreach ($targetUrl as $targetKey => $targetValue) {
 			if (is_array($targetValue)) {
-				if (!in_array($current[$targetKey], $targetValue)) {
+				if (!isset($current[$targetKey]) || !in_array($current[$targetKey], $targetValue)) {
 					return false;
 				}
 
 				continue;
 			}
-			if (!array_key_exists($targetKey, $current) || $targetValue != $current[$targetKey]) {
+			if (!isset($targetKey, $current) || $targetValue != $current[$targetKey]) {
 				return false;
 			}
 		}