diff --git a/login_tracker.api.php b/login_tracker.api.php
index 6ea937a..22eeb09 100644
--- a/login_tracker.api.php
+++ b/login_tracker.api.php
@@ -39,7 +39,7 @@ function hook_login_tracker_track_login_alter(&$track_login, array $edit, $accou
  *
  * @see login_tracker_user_login()
  */
-function hook_login_tracker_login_data(array &$data, array $edit, $account) {
+function hook_login_tracker_login_data_alter(array &$data, array $edit, $account) {
   // Store a random number between 1 and 10 with the tracked login.
   $data['my-random-number'] = rand(1, 10);
 }