diff --git a/source/java/org/alfresco/repo/web/scripts/discussion/ForumTopicsGet.java b/source/java/org/alfresco/repo/web/scripts/discussion/ForumTopicsGet.java
index e43ab60996..f59f7709f6 100644
--- a/source/java/org/alfresco/repo/web/scripts/discussion/ForumTopicsGet.java
+++ b/source/java/org/alfresco/repo/web/scripts/discussion/ForumTopicsGet.java
@@ -67,11 +67,11 @@ public class ForumTopicsGet extends AbstractDiscussionWebScript
       {
          if(site != null)
          {
-            topics = discussionService.findTopics(site.getShortName(), tag, paging);
+            topics = discussionService.findTopics(site.getShortName(), null, tag, paging);
          }
          else
          {
-            topics = discussionService.findTopics(nodeRef, tag, paging);
+            topics = discussionService.findTopics(nodeRef, null, tag, paging);
          }
       }
       else