diff --git a/app/Actions/Statistics/LoadEvents.php b/app/Actions/Statistics/LoadEvents.php
index 1584fee5..201bfabe 100644
--- a/app/Actions/Statistics/LoadEvents.php
+++ b/app/Actions/Statistics/LoadEvents.php
@@ -168,7 +168,7 @@ class LoadEvents
                 }
             }
 
-            if ($val) {
+            if (isset($val)) {
                 $datasets[] = $val;
             }
         }