diff --git a/action/user.php b/action/user.php
index 639abfe..291ea14 100644
--- a/action/user.php
+++ b/action/user.php
@@ -62,11 +62,13 @@ public function handleUsermod(Event $event)
     {
         global $ACT;
         global $USERINFO;
+        /** @var auth_plugin_authplain $auth */
         global $auth;
         global $INPUT;
 
         if ($event->data['type'] != 'modify') return;
         if ($ACT != 'profile') return;
+        if ($this->hlp->getConf('singleService')) return;
 
         // we want to modify the user's groups
         $groups = $USERINFO['grps']; //current groups
@@ -108,6 +110,8 @@ public function handleOldProfileform(Event $event)
         /** @var auth_plugin_authplain $auth */
         global $auth;
 
+        if ($this->hlp->getConf('singleService')) return;
+
         /** @var Doku_Form $form */
         $form = $event->data;
         $pos = $form->findElementByAttribute('type', 'submit');
@@ -151,6 +155,8 @@ public function handleProfileform(Event $event)
         /** @var auth_plugin_authplain $auth */
         global $auth;
 
+        if ($this->hlp->getConf('singleService')) return;
+
         /** @var Form $form */
         $form = $event->data;
         $pos = $form->findPositionByAttribute('type', 'submit');