diff --git a/lib/plugins/usermanager/admin.php b/lib/plugins/usermanager/admin.php
index 9314e395ce833afd76a6e9d46396b8cc33c6659f..f90a172b3b7abedae44c903c8a5d9d93578f51b9 100644
--- a/lib/plugins/usermanager/admin.php
+++ b/lib/plugins/usermanager/admin.php
@@ -329,12 +329,12 @@ class admin_plugin_usermanager extends DokuWiki_Admin_Plugin {
         ptln("    </thead>",$indent);
         ptln("    <tbody>",$indent);
 
-        $this->_htmlInputField($cmd."_userid",    "userid",    $this->lang["user_id"],    $user,  $this->_auth->canDo("modLogin"), $indent+6);
-        $this->_htmlInputField($cmd."_userpass",  "userpass",  $this->lang["user_pass"],  "",     $this->_auth->canDo("modPass"),  $indent+6);
-        $this->_htmlInputField($cmd."_userpass2", "userpass2", $lang["passchk"],          "",     $this->_auth->canDo("modPass"),  $indent+6);
-        $this->_htmlInputField($cmd."_username",  "username",  $this->lang["user_name"],  $name,  $this->_auth->canDo("modName"),  $indent+6);
-        $this->_htmlInputField($cmd."_usermail",  "usermail",  $this->lang["user_mail"],  $mail,  $this->_auth->canDo("modMail"),  $indent+6);
-        $this->_htmlInputField($cmd."_usergroups","usergroups",$this->lang["user_groups"],$groups,$this->_auth->canDo("modGroups"),$indent+6);
+        $this->_htmlInputField($cmd."_userid",    "userid",    $this->lang["user_id"],    $user,  $this->_auth->canDo("modLogin"),   true, $indent+6);
+        $this->_htmlInputField($cmd."_userpass",  "userpass",  $this->lang["user_pass"],  "",     $this->_auth->canDo("modPass"),   false, $indent+6);
+        $this->_htmlInputField($cmd."_userpass2", "userpass2", $lang["passchk"],          "",     $this->_auth->canDo("modPass"),   false, $indent+6);
+        $this->_htmlInputField($cmd."_username",  "username",  $this->lang["user_name"],  $name,  $this->_auth->canDo("modName"),    true, $indent+6);
+        $this->_htmlInputField($cmd."_usermail",  "usermail",  $this->lang["user_mail"],  $mail,  $this->_auth->canDo("modMail"),    true, $indent+6);
+        $this->_htmlInputField($cmd."_usergroups","usergroups",$this->lang["user_groups"],$groups,$this->_auth->canDo("modGroups"), false, $indent+6);
 
         if ($this->_auth->canDo("modPass")) {
             if ($cmd == 'add') {
@@ -385,9 +385,10 @@ class admin_plugin_usermanager extends DokuWiki_Admin_Plugin {
      * @param string $label
      * @param string $value
      * @param bool   $cando whether auth backend is capable to do this action
+     * @param bool   $required is this field required?
      * @param int $indent
      */
-    protected function _htmlInputField($id, $name, $label, $value, $cando, $indent=0) {
+    protected function _htmlInputField($id, $name, $label, $value, $cando, $required, $indent=0) {
         $class = $cando ? '' : ' class="disabled"';
         echo str_pad('',$indent);
 
@@ -407,7 +408,9 @@ class admin_plugin_usermanager extends DokuWiki_Admin_Plugin {
         echo "<td><label for=\"$id\" >$label: </label></td>";
         echo "<td>";
         if($cando){
-            echo "<input type=\"$fieldtype\" id=\"$id\" name=\"$name\" value=\"$value\" class=\"edit\" $autocomp />";
+            $req = '';
+            if($required) $req = 'required="required"';
+            echo "<input type=\"$fieldtype\" id=\"$id\" name=\"$name\" value=\"$value\" class=\"edit\" $autocomp $req />";
         }else{
             echo "<input type=\"hidden\" name=\"$name\" value=\"$value\" />";
             echo "<input type=\"$fieldtype\" id=\"$id\" name=\"$name\" value=\"$value\" class=\"edit disabled\" disabled=\"disabled\" />";