--- smartqueue_users/theme/theme.inc 
+++ smartqueue_users/theme/theme.inc 
@@ -114,7 +114,7 @@
     }
     
     // If the subqueue is not empty then we mark that there are some viewable subqueues
-    if (!empty($vars['subqueues'][$qid])) {
+    if (!empty($rows)) {
       $vars['viewable_subqueues'] = TRUE;
     }