diff --git a/application/helpers/admin/statistics_helper.php b/application/helpers/admin/statistics_helper.php
index b019dffd681..d0ea0c32484 100644
--- a/application/helpers/admin/statistics_helper.php
+++ b/application/helpers/admin/statistics_helper.php
@@ -3718,6 +3718,8 @@ public function generate_html_chartjs_statistics($surveyid, $allfields, $q2show
 
             //add filter criteria to SQL
             $query .= implode(" AND ", $selects);
+        } else {
+            unset(Yii::app()->session['statistics_selects_'.$surveyid]);
         }
 
         //get me some data Scotty