diff --git a/lib/reporting/report_renderer.rb b/lib/reporting/report_renderer.rb
index 0c56d6daab..274bdf95c2 100644
--- a/lib/reporting/report_renderer.rb
+++ b/lib/reporting/report_renderer.rb
@@ -15,7 +15,7 @@ module Reporting
     end
 
     def html_render?
-      @report.params[:report_format].in?(['', 'pdf'])
+      @report.params[:report_format].in?([nil, '', 'pdf'])
     end
 
     def display_header_row?