diff --git a/Classes/Controller/SuggestController.php b/Classes/Controller/SuggestController.php
index 94a7b4e..893f67d 100644
--- a/Classes/Controller/SuggestController.php
+++ b/Classes/Controller/SuggestController.php
@@ -69,7 +69,7 @@ public function initializeObject()
      * @throws QueryBuildingException
      * @throws \Neos\Flow\Persistence\Exception\IllegalObjectTypeException
      */
-    public function indexAction(string $term, string $contextNodeIdentifier, string $dimensionCombination = null): void
+    public function indexAction(string $term = '', string $contextNodeIdentifier, string $dimensionCombination = null): void
     {
         if ($this->elasticSearchClient === null) {
             throw new \RuntimeException('The SuggestController needs an ElasticSearchClient, it seems you run without the flowpack/elasticsearch-contentrepositoryadaptor package, though.', 1487189823);