diff --git a/rest_api_doc.module b/rest_api_doc.module
index 717eea5..39d5d48 100644
--- a/rest_api_doc.module
+++ b/rest_api_doc.module
@@ -23,7 +23,7 @@ function rest_api_doc_menu() {
 /**
  * Implements hook_permission().
  */
-function rest_api_doc__permission() {
+function rest_api_doc_permission() {
   return array(
     'access rest_api_doc' => array(
       'title' => t('Access REST API documentation'),