diff --git a/core/modules/views/src/Plugin/Block/ViewsExposedFilterBlock.php b/core/modules/views/src/Plugin/Block/ViewsExposedFilterBlock.php
index e9f9dc4..09b3662 100644
--- a/core/modules/views/src/Plugin/Block/ViewsExposedFilterBlock.php
+++ b/core/modules/views/src/Plugin/Block/ViewsExposedFilterBlock.php
@@ -29,9 +29,12 @@ public function build() {
     $this->addContextualLinks($output, 'exposed_filter');
 
     // Merge cache contexts for each filter option.
+    if (!isset($output['#cache']['contexts'])) {
+      $output['#cache']['contexts'] = [];
+    }
     $contexts = &$output['#cache']['contexts'];
     foreach ($this->view->filter as $id => $handler) {
-      if ($handler->canExpose() && $handler->isExposed() && !empty($handler->options['expose']['identifier'])) {
+      if ($handler->canExpose() && $handler->isExposed()) {
         $contexts = Cache::mergeContexts($contexts, $handler->getCacheContexts());
       }
     }