diff --git a/action.php b/action.php
index 1271827..0d99d97 100644
--- a/action.php
+++ b/action.php
@@ -45,6 +45,10 @@ public function getUser()
         $data['mail'] = $result['email'];
         $data['grps'] = array_merge($result['groups'] ?? [], $result['roles'] ?? []);
 
+        if ($this->getConf('stripdomain')) {
+            $data['user'] = explode('@', $data['user'], 2)[0];
+        }
+
         if ($this->getConf('fetchgroups')) {
             $usergroups = $oauth->request(Azure::GRAPH_MEMBEROF);
             $usergroups = json_decode($usergroups, true);
diff --git a/conf/default.php b/conf/default.php
index f3fa463..5e0552f 100644
--- a/conf/default.php
+++ b/conf/default.php
@@ -8,3 +8,4 @@
 $conf['secret'] = '';
 $conf['tenant'] = '';
 $conf['fetchgroups'] = 0;
+$conf['stripdomain'] = 0;
diff --git a/conf/metadata.php b/conf/metadata.php
index fbacb20..8a93082 100644
--- a/conf/metadata.php
+++ b/conf/metadata.php
@@ -8,3 +8,4 @@
 $meta['secret'] = array('password');
 $meta['tenant'] = array('string');
 $meta['fetchgroups'] = array('onoff');
+$meta['stripdomain'] = array('onoff');
diff --git a/lang/en/settings.php b/lang/en/settings.php
index 5abf9a9..780dd58 100644
--- a/lang/en/settings.php
+++ b/lang/en/settings.php
@@ -8,3 +8,4 @@
 $lang['secret'] = 'Cient Secret';
 $lang['openidurl'] = 'Your tenant name or ID';
 $lang['fetchgroups'] = 'By default only roles from the JWT are used as user groups. Enabling this option fetches group data.';
+$lang['stripdomain'] = 'Strip @domain from preferred_username';