diff --git a/phpBB/includes/acp/acp_groups.php b/phpBB/includes/acp/acp_groups.php
index bbe85f8038..dbe692aee0 100644
--- a/phpBB/includes/acp/acp_groups.php
+++ b/phpBB/includes/acp/acp_groups.php
@@ -120,6 +120,10 @@ class acp_groups
 				{
 					trigger_error($user->lang['NO_GROUP'] . adm_back_link($this->u_action), E_USER_WARNING);
 				}
+				else if (!$name_ary)
+				{
+					trigger_error($user->lang['NO_USERS'] . adm_back_link($this->u_action . '&action=list&g=' . $group_id), E_USER_WARNING);
+				}
 
 				if (confirm_box(true))
 				{