diff --git a/src/Twig/Extension/PhoneNumberHelperExtension.php b/src/Twig/Extension/PhoneNumberHelperExtension.php
index 71bbbf44..bb7f6e3a 100644
--- a/src/Twig/Extension/PhoneNumberHelperExtension.php
+++ b/src/Twig/Extension/PhoneNumberHelperExtension.php
@@ -41,6 +41,8 @@ public function __construct(PhoneNumberHelper $helper)
 
     /**
      * {@inheritdoc}
+     *
+     * @return array
      */
     public function getFunctions()
     {
@@ -53,6 +55,8 @@ public function getFunctions()
 
     /**
      * {@inheritdoc}
+     *
+     * @return array
      */
     public function getFilters()
     {
@@ -64,6 +68,8 @@ public function getFilters()
 
     /**
      * {@inheritdoc}
+     *
+     * @return array
      */
     public function getTests()
     {