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-rw-r--r--openbsc/src/gprs/gprs_gmm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/openbsc/src/gprs/gprs_gmm.c b/openbsc/src/gprs/gprs_gmm.c
index 630810aaa..6ece0e9ab 100644
--- a/openbsc/src/gprs/gprs_gmm.c
+++ b/openbsc/src/gprs/gprs_gmm.c
@@ -2400,7 +2400,7 @@ int gsm0408_gprs_rcvmsg_iu(struct msgb *msg, struct gprs_ra_id *ra_id,
uint16_t *sai)
{
struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_gmmh(msg);
- uint8_t pdisc = gh->proto_discr & 0x0f;
+ uint8_t pdisc = gsm48_hdr_pdisc(gh);
struct sgsn_mm_ctx *mmctx;
int rc = -EINVAL;