diff --git a/app/Actions/Statistics/LoadEvents.php b/app/Actions/Statistics/LoadEvents.php
index de506030..adb3ea70 100644
--- a/app/Actions/Statistics/LoadEvents.php
+++ b/app/Actions/Statistics/LoadEvents.php
@@ -49,7 +49,7 @@ class LoadEvents
         $labels = [];
 
         $statistic_type = $filter['statistic_type'];
-        if ($statistic_type == 'none') {
+        if (! $statistic_type || $statistic_type == 'none') {
             $statistic_type = 'gls';
         }