diff --git a/inc/mailcollectorfeature.class.php b/inc/mailcollectorfeature.class.php
index 1f8fe44..3fe9ce4 100644
--- a/inc/mailcollectorfeature.class.php
+++ b/inc/mailcollectorfeature.class.php
@@ -155,7 +155,7 @@ function (evt) {
 
                                 application_field.val(application_id);
                                 auth_field_container.load(
-                                    '/plugins/oauthimap/ajax/dropdownAuthorization.php',
+                                    CFG_GLPI['root_doc'] + '/plugins/oauthimap/ajax/dropdownAuthorization.php',
                                     {
                                         application_id: application_id,
                                         selected: login_field.val()