diff --git a/cas.module b/cas.module
index 338fa7a..f7e5055 100644
--- a/cas.module
+++ b/cas.module
@@ -158,6 +158,12 @@ function cas_login_check() {
       user_login_finalize($edit);
 
       drupal_set_message(t(variable_get('cas_login_message', 'Logged in via CAS as %cas_username.'), array('%cas_username' => $user->name)));
+
+      // Make this event available for Rules module.
+      if (module_exists('rules')) {
+        rules_invoke_event('authentification_via_cas');
+      }
+
       if (!empty($edit['persistent_login'])) {
         drupal_set_message(t('You will remain logged in on this computer even after you close your browser.'));
       }