diff --git a/src/usr/local/www/interfaces_qinq_edit.php b/src/usr/local/www/interfaces_qinq_edit.php
index 4314b2939a..8f584f0081 100644
--- a/src/usr/local/www/interfaces_qinq_edit.php
+++ b/src/usr/local/www/interfaces_qinq_edit.php
@@ -219,6 +219,7 @@ if ($_POST['save']) {
 				$gentry['ifname'] = "QinQ";
 				$gentry['members'] = "{$additions}";
 				$gentry['descr'] = gettext("QinQ VLANs group");
+				init_config_arr(array('ifgroups', 'ifgroupentry'));
 				$config['ifgroups']['ifgroupentry'][] = $gentry;
 			}
 		}