diff --git a/app/assets/javascripts/app/controllers/_application_controller_table.coffee b/app/assets/javascripts/app/controllers/_application_controller_table.coffee
index 7e4e256a1..429624b1b 100644
--- a/app/assets/javascripts/app/controllers/_application_controller_table.coffee
+++ b/app/assets/javascripts/app/controllers/_application_controller_table.coffee
@@ -243,7 +243,8 @@ class App.ControllerTable extends App.Controller
               item = App[attributes[withId].relation].findNative(object[withId])
               if item && item.displayName
                 group = item.displayName().toLowerCase()
-
+        if _.isEmpty(group)
+          group = ''
         groupObjects[group] ||= []
         groupObjects[group].push object