diff --git a/mod/forum/restorelib.php b/mod/forum/restorelib.php
index 1095b8dd1e3..51fcc90cd56 100644
--- a/mod/forum/restorelib.php
+++ b/mod/forum/restorelib.php
@@ -263,7 +263,7 @@
             }
 
             //We have to recode the groupid field
-            $group = backup_getid($restore->backup_unique_code,"group",$discussion->groupid);
+            $group = backup_getid($restore->backup_unique_code, 'groups', $discussion->groupid);
             if ($group) {
                 $discussion->groupid = $group->new_id;
             }