diff --git a/templates/sidebar.block.related.php b/templates/sidebar.block.related.php
index 3a37718..fd305a6 100644
--- a/templates/sidebar.block.related.php
+++ b/templates/sidebar.block.related.php
@@ -6,6 +6,9 @@ $logged_on_userid = $userservice->getCurrentUserId();
 if ($logged_on_userid === false) {
     $logged_on_userid = NULL;
 }
+if(strlen($user)==0) {
+    $cat_url = createURL('tags', '%2$s');
+}
 if ($currenttag) {
     $relatedTags = $tagservice->getRelatedTags($currenttag, $userid, $logged_on_userid);
     if (sizeof($relatedTags) > 0) {
@@ -26,4 +29,4 @@ if ($currenttag) {
 <?php
     }
 }
-?>
\ No newline at end of file
+?>