diff --git a/openbsc/src/gprs_llc.c b/openbsc/src/gprs_llc.c
index aea40d3..883eedb 100644
--- a/openbsc/src/gprs_llc.c
+++ b/openbsc/src/gprs_llc.c
@@ -428,7 +428,7 @@
 /* receive an incoming LLC PDU (BSSGP-UL-UNITDATA-IND, 7.2.4.2) */
 int gprs_llc_rcvmsg(struct msgb *msg, struct tlv_parsed *tv)
 {
-	struct bssgp_ud_hdr *udh = (struct bssgp_ud_hdr *) msg->l3h;
+	struct bssgp_ud_hdr *udh = (struct bssgp_ud_hdr *) msgb_bssgph(msg);
 	struct gprs_llc_hdr *lh = msgb_llch(msg);
 	struct gprs_llc_hdr_parsed llhp;
 	struct gprs_llc_entity *lle;