diff --git a/app/controllers/application_controller/performance.rb b/app/controllers/application_controller/performance.rb
index 44a93c8d9e8..14402ba5345 100644
--- a/app/controllers/application_controller/performance.rb
+++ b/app/controllers/application_controller/performance.rb
@@ -859,7 +859,7 @@ def prepare_perf_tag_chart(chart, rpt, cat_desc)
     # Grab the first (and should be only) chart column
     col = chart[:columns].first
     # Create the new chart columns for each tag
-    chart[:columns] ||= rpt.extras[:group_by_tags].collect { |t| col + "_" + t }
+    chart[:columns] = rpt.extras[:group_by_tags].collect { |t| col + "_" + t }
   end
 
   def gen_perf_chart(chart, rpt, idx, zoom_action)