diff --git a/src/bsc_hack.c b/src/bsc_hack.c
index cadf41c..7fa12e7 100644
--- a/src/bsc_hack.c
+++ b/src/bsc_hack.c
@@ -584,17 +584,17 @@
 static_assert(sizeof(si6) >= sizeof(struct gsm48_system_information_type_6), type6)
 
 /* set all system information types */
-static int set_system_infos(struct gsm_bts *bts)
+static int set_system_infos(struct gsm_bts_trx *trx)
 {
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(bcch_infos); i++) {
-		rsl_bcch_info(bts, bcch_infos[i].type,
+		rsl_bcch_info(trx, bcch_infos[i].type,
 			      bcch_infos[i].data,
 			      bcch_infos[i].len);
 	}
-	rsl_sacch_filling(bts, RSL_SYSTEM_INFO_5, si5, sizeof(si5));
-	rsl_sacch_filling(bts, RSL_SYSTEM_INFO_6, si6, sizeof(si6));
+	rsl_sacch_filling(trx, RSL_SYSTEM_INFO_5, si5, sizeof(si5));
+	rsl_sacch_filling(trx, RSL_SYSTEM_INFO_6, si6, sizeof(si6));
 
 	return 0;
 }
@@ -648,10 +648,10 @@
 }
 
 
-static void bootstrap_rsl(struct gsm_bts *bts)
+static void bootstrap_rsl(struct gsm_bts_trx *trx)
 {
 	fprintf(stdout, "bootstrapping RSL MCC=%u MNC=%u\n", MCC, MNC);
-	set_system_infos(bts);
+	set_system_infos(trx);
 }
 
 static void mi_cb(int event, struct gsm_bts *bts)
@@ -661,7 +661,7 @@
 		bootstrap_om(bts);
 		break;
 	case EVT_E1_RSL_UP:
-		bootstrap_rsl(bts);
+		bootstrap_rsl(bts->c0);
 		break;
 	default:
 		/* FIXME: deal with TEI or L1 link loss */