diff --git a/render/box_construct.c b/render/box_construct.c
index adb450946..8434253a3 100644
--- a/render/box_construct.c
+++ b/render/box_construct.c
@@ -2654,6 +2654,7 @@ bool box_select(BOX_SPECIAL_PARAMS)
 				if (err != DOM_NO_ERR) {
 					dom_node_unref(c2);
 					dom_node_unref(c);
+					form_free_control(gadget);
 					return false;
 				}