diff --git a/core/modules/views/src/Plugin/views/filter/FilterPluginBase.php b/core/modules/views/src/Plugin/views/filter/FilterPluginBase.php
index c7ff6bb..d9b6de2 100644
--- a/core/modules/views/src/Plugin/views/filter/FilterPluginBase.php
+++ b/core/modules/views/src/Plugin/views/filter/FilterPluginBase.php
@@ -1090,11 +1090,11 @@ protected function buildExposedFiltersGroupForm(&$form, FormStateInterface $form
       'hidden' => TRUE,
       'limit' => 0,
     );
-    if (!empty($form_state['js settings']) && is_array($js)) {
-      $form_state['js settings'] = array_merge($form_state['js settings'], $js);
+    if (!empty($form_state['js_settings']) && is_array($js)) {
+      $form_state['js_settings'] = array_merge($form_state['js_settings'], $js);
     }
     else {
-      $form_state['js settings'] = $js;
+      $form_state['js_settings'] = $js;
     }
   }