diff --git a/scripts/createsim.php b/scripts/createsim.php
index 7435dcfeb2..14790aa8f3 100644
--- a/scripts/createsim.php
+++ b/scripts/createsim.php
@@ -118,7 +118,7 @@ function newNotice($i, $tagmax)
     if ($in_group == 0) {
         $groups = $user->getGroups();
         if ($groups->N > 0) {
-            $gval = rand(0, $group->N - 1);
+            $gval = rand(0, $groups->N - 1);
             $groups->fetch(); // go to 0th
             for ($i = 0; $i < $gval; $i++) {
                 $groups->fetch();