diff --git a/openbsc/src/gprs_ns.c b/openbsc/src/gprs_ns.c
index 7f94b97..470ccb0 100644
--- a/openbsc/src/gprs_ns.c
+++ b/openbsc/src/gprs_ns.c
@@ -266,7 +266,7 @@
 
 	/* spare octet in data[0] */
 	bvci = nsh->data[1] << 8 | nsh->data[2];
-	msg->l3h = &nsh->data[3];
+	msgb_bssgph(msg) = &nsh->data[3];
 
 	/* call upper layer (BSSGP) */
 	return nsvc->nsi->cb(GPRS_NS_EVT_UNIT_DATA, nsvc, msg, bvci);