diff --git a/web/modules/custom/hoeringsportal_forms/src/Plugin/views/filter/NodeIndexNid.php b/web/modules/custom/hoeringsportal_forms/src/Plugin/views/filter/NodeIndexNid.php
index dde1f289..69fe76cc 100644
--- a/web/modules/custom/hoeringsportal_forms/src/Plugin/views/filter/NodeIndexNid.php
+++ b/web/modules/custom/hoeringsportal_forms/src/Plugin/views/filter/NodeIndexNid.php
@@ -315,7 +315,7 @@ public function acceptExposedInput($input) {
     }
 
     // If it's non-required and there's no value don't bother filtering.
-    if (!$this->options['expose']['required'] && empty($this->validated_exposed_input)) {
+    if (!$this->options['expose']['required'] && !isset($this->validated_exposed_input)) {
       return FALSE;
     }