diff --git a/app/helpers/stats_helper.rb b/app/helpers/stats_helper.rb
index d321bce0b..fe0786738 100644
--- a/app/helpers/stats_helper.rb
+++ b/app/helpers/stats_helper.rb
@@ -25,7 +25,6 @@ module StatsHelper
   end
 
   def budget_investments_chart_tag(opt = {})
-    events = events.join(",") if events.is_a? Array
     opt[:data] ||= {}
     opt[:data][:graph] = admin_api_stats_path(budget_investments: true)
     content_tag :div, "", opt