diff --git a/core/modules/contact/src/Plugin/Block/ContactNavigationBlock.php b/core/modules/contact/src/Plugin/Block/ContactNavigationBlock.php
index 9e961f3..9c3d709 100644
--- a/core/modules/contact/src/Plugin/Block/ContactNavigationBlock.php
+++ b/core/modules/contact/src/Plugin/Block/ContactNavigationBlock.php
@@ -82,7 +82,7 @@ public function getCacheTags() {
     $cache_tags = parent::getCacheTags();
     if ($forms = array_keys($this->configuration['forms'])) {
       foreach ($this->storage->loadMultiple($forms) as $form) {
-        $cache_tags = Cache::mergeTags($cache_tags, $form->getCacheTag());
+        $cache_tags = Cache::mergeTags($cache_tags, $form->getCacheTags());
       }
     }
     return $cache_tags;