diff --git a/openbsc/include/openbsc/signal.h b/openbsc/include/openbsc/signal.h
index fa38bbe..598d470 100644
--- a/openbsc/include/openbsc/signal.h
+++ b/openbsc/include/openbsc/signal.h
@@ -185,6 +185,7 @@
 
 struct nm_nack_signal_data {
 	struct msgb *msg;
+	struct gsm_bts *bts;
 	uint8_t mt;
 };
 
diff --git a/openbsc/src/libbsc/abis_nm.c b/openbsc/src/libbsc/abis_nm.c
index 4fd11c7..e95c0a9 100644
--- a/openbsc/src/libbsc/abis_nm.c
+++ b/openbsc/src/libbsc/abis_nm.c
@@ -548,6 +548,7 @@
 
 		nack_data.msg = mb;
 		nack_data.mt = mt;
+		nack_data.bts = sign_link->trx->bts;
 		osmo_signal_dispatch(SS_NM, S_NM_NACK, &nack_data);
 		abis_nm_queue_send_next(sign_link->trx->bts);
 		return 0;
diff --git a/openbsc/src/libbsc/bsc_init.c b/openbsc/src/libbsc/bsc_init.c
index f5d7969..9e734c0 100644
--- a/openbsc/src/libbsc/bsc_init.c
+++ b/openbsc/src/libbsc/bsc_init.c
@@ -43,8 +43,6 @@
 /* Callback function for NACK on the OML NM */
 static int oml_msg_nack(struct nm_nack_signal_data *nack)
 {
-	struct gsm_bts *bts;
-
 	if (nack->mt == NM_MT_SET_BTS_ATTR_NACK) {
 
 		LOGP(DNM, LOGL_ERROR, "Failed to set BTS attributes. That is fatal. "
@@ -58,13 +56,13 @@
 	return 0;
 
 drop_bts:
-	if (!nack->msg || !nack->msg->trx)
+	if (!nack->bts) {
+		LOGP(DNM, LOGL_ERROR, "Unknown bts. Can not drop it.\n");
 		return 0;
+	}
 
-	bts = nack->msg->trx->bts;
-
-	if (is_ipaccess_bts(bts))
-		ipaccess_drop_oml(bts);
+	if (is_ipaccess_bts(nack->bts))
+		ipaccess_drop_oml(nack->bts);
 
 	return 0;
 }