diff --git a/etc/inc/util.inc b/etc/inc/util.inc
index 6eb883f027..6737c944c3 100644
--- a/etc/inc/util.inc
+++ b/etc/inc/util.inc
@@ -333,6 +333,7 @@ function get_interface_list($mode = "active", $keyby = "physical", $vfaces = "")
 				'ppp',
 				'sl',
 				'gif',
+				'gre',
 				'faith',
 				'lo',
 				'ng',