diff --git a/user/index.php b/user/index.php
index 2f4119b08f2..362d2be641e 100644
--- a/user/index.php
+++ b/user/index.php
@@ -346,6 +346,8 @@
 
     if (!isset($hiddenfields['lastaccess'])) {
         $table->sortable(true, 'lastaccess', SORT_DESC);
+    } else {
+        $table->sortable(true, 'firstname', SORT_ASC);
     }
 
     $table->no_sorting('roles');