diff --git a/app/coffee/modules/backlog/main.coffee b/app/coffee/modules/backlog/main.coffee
index beb51fbd..df838b4a 100644
--- a/app/coffee/modules/backlog/main.coffee
+++ b/app/coffee/modules/backlog/main.coffee
@@ -350,7 +350,7 @@ class BacklogController extends mixOf(taiga.Controller, taiga.PageMixin, taiga.F
 
         @scope.filters = {}
 
-        plainTags = _.flatten(_.map(@scope.userstories, "tags"))
+        plainTags = _.flatten(_.filter(_.map(@scope.userstories, "tags")))
         @scope.filters.tags = _.map _.countBy(plainTags), (v, k) =>
             obj = {
                 id: k,