diff --git a/openbsc/include/openbsc/abis_nm.h b/openbsc/include/openbsc/abis_nm.h
index d5c7a13d4..d6469c466 100644
--- a/openbsc/include/openbsc/abis_nm.h
+++ b/openbsc/include/openbsc/abis_nm.h
@@ -808,7 +808,7 @@ int abis_nm_ipaccess_msg(struct gsm_bts *bts, u_int8_t msg_type,
 			 u_int8_t obj_class, u_int8_t bts_nr,
 			 u_int8_t trx_nr, u_int8_t ts_nr,
 			 u_int8_t *attr, int attr_len);
-int abis_nm_ipaccess_set_nvattr(struct gsm_bts *bts, u_int8_t *attr,
+int abis_nm_ipaccess_set_nvattr(struct gsm_bts_trx *trx, u_int8_t *attr,
 				int attr_len);
 int abis_nm_ipaccess_restart(struct gsm_bts *bts);
 int abis_nm_ipaccess_set_attr(struct gsm_bts *bts, u_int8_t obj_class,
diff --git a/openbsc/src/abis_nm.c b/openbsc/src/abis_nm.c
index d679d7851..aaa7dd5fb 100644
--- a/openbsc/src/abis_nm.c
+++ b/openbsc/src/abis_nm.c
@@ -2899,11 +2899,11 @@ int abis_nm_ipaccess_msg(struct gsm_bts *bts, u_int8_t msg_type,
 }
 
 /* set some attributes in NVRAM */
-int abis_nm_ipaccess_set_nvattr(struct gsm_bts *bts, u_int8_t *attr,
+int abis_nm_ipaccess_set_nvattr(struct gsm_bts_trx *trx, u_int8_t *attr,
 				int attr_len)
 {
-	return abis_nm_ipaccess_msg(bts, NM_MT_IPACC_SET_NVATTR,
-				    NM_OC_BASEB_TRANSC, 0, 0, 0xff, attr,
+	return abis_nm_ipaccess_msg(trx->bts, NM_MT_IPACC_SET_NVATTR,
+				    NM_OC_BASEB_TRANSC, 0, trx->nr, 0xff, attr,
 				    attr_len);
 }
 
diff --git a/openbsc/src/ipaccess/ipaccess-config.c b/openbsc/src/ipaccess/ipaccess-config.c
index ceac7bdf4..3b2a8bfd0 100644
--- a/openbsc/src/ipaccess/ipaccess-config.c
+++ b/openbsc/src/ipaccess/ipaccess-config.c
@@ -268,7 +268,7 @@ static int swload_cbfn(unsigned int hook, unsigned int event, struct msgb *_msg,
 		msg->l2h[1] = msgb_l3len(msg) >> 8;
 		msg->l2h[2] = msgb_l3len(msg) & 0xff;
 		printf("Foo l2h: %p l3h: %p... length l2: %u  l3: %u\n", msg->l2h, msg->l3h, msgb_l2len(msg), msgb_l3len(msg));
-		abis_nm_ipaccess_set_nvattr(bts, msg->l2h, msgb_l2len(msg));
+		abis_nm_ipaccess_set_nvattr(bts->c0, msg->l2h, msgb_l2len(msg));
 		msgb_free(msg);
 		break;
 	case NM_MT_LOAD_END_NACK:
@@ -313,7 +313,7 @@ static void bootstrap_om(struct gsm_bts *bts)
 		memcpy(buf+3, unit_id, len);
 		buf[3+len] = 0;
 		printf("setting Unit ID to '%s'\n", unit_id);
-		abis_nm_ipaccess_set_nvattr(bts, buf, 3+len+1);
+		abis_nm_ipaccess_set_nvattr(bts->c0, buf, 3+len+1);
 	}
 	if (prim_oml_ip) {
 		struct in_addr ia;
@@ -337,7 +337,7 @@ static void bootstrap_om(struct gsm_bts *bts)
 		*cur++ = 0;
 		printf("setting primary OML link IP to '%s'\n", inet_ntoa(ia));
 		oml_state = 1;
-		abis_nm_ipaccess_set_nvattr(bts, buf, 3+len);
+		abis_nm_ipaccess_set_nvattr(bts->c0, buf, 3+len);
 	}
 	if (nv_mask) {
 		len = 4;
@@ -351,7 +351,7 @@ static void bootstrap_om(struct gsm_bts *bts)
 		*cur++ = nv_mask >> 8;
 		printf("setting NV Flags/Mask to 0x%04x/0x%04x\n",
 			nv_flags, nv_mask);
-		abis_nm_ipaccess_set_nvattr(bts, buf, 3+len);
+		abis_nm_ipaccess_set_nvattr(bts->c0, buf, 3+len);
 	}
 
 	if (restart && !prim_oml_ip && !software) {