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-rw-r--r--src/gsm/lapdm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/gsm/lapdm.c b/src/gsm/lapdm.c
index 9f795c6d..86dc242c 100644
--- a/src/gsm/lapdm.c
+++ b/src/gsm/lapdm.c
@@ -754,7 +754,7 @@ static int l2_ph_data_ind(struct msgb *msg, struct lapdm_entity *le,
msg->l2h += 2;
} else {
/* A Short L3 header has both bits == 0. */
- if (LAPDm_ADDR_SHORT_L2(msg->l2h[2]) == 0) {
+ if (LAPDm_ADDR_SHORT_L2(msg->l2h[0]) == 0) {
mctx.lapdm_fmt = LAPDm_FMT_Bter;
n201 = N201_Bter_SDCCH;
sapi = 0;