diff --git a/src/User/Widget/ReCaptchaWidget.php b/src/User/Widget/ReCaptchaWidget.php
index 29f0507..aa7e8d6 100644
--- a/src/User/Widget/ReCaptchaWidget.php
+++ b/src/User/Widget/ReCaptchaWidget.php
@@ -65,6 +65,8 @@ class ReCaptchaWidget extends InputWidget
 
     /**
      * @inheritdoc
+     *
+     * @throws InvalidConfigException
      */
     public function run()
     {