diff --git a/openbsc/src/libmsc/smpp_smsc.h b/openbsc/src/libmsc/smpp_smsc.h
index e72f81f..86fbeb5 100644
--- a/openbsc/src/libmsc/smpp_smsc.h
+++ b/openbsc/src/libmsc/smpp_smsc.h
@@ -61,6 +61,7 @@
 	int default_route;
 	int deliver_src_imsi;
 	int osmocom_ext;
+	int dcs_transparent;
 	struct llist_head route_list;
 };