diff --git a/openbsc/src/libbsc/bsc_vty.c b/openbsc/src/libbsc/bsc_vty.c
index b906c2e..0030764 100644
--- a/openbsc/src/libbsc/bsc_vty.c
+++ b/openbsc/src/libbsc/bsc_vty.c
@@ -795,8 +795,7 @@
 {
 	vty_out(vty, "BTS %u, TRX %u, Timeslot %u, phys cfg %s, TSC %u",
 		ts->trx->bts->nr, ts->trx->nr, ts->nr,
-		gsm_pchan_name(ts->pchan),
-		ts->tsc == -1 ? ts->trx->bts->tsc : ts->tsc);
+		gsm_pchan_name(ts->pchan), gsm_ts_tsc(ts));
 	if (ts->pchan == GSM_PCHAN_TCH_F_PDCH)
 		vty_out(vty, " (%s mode)",
 			ts->flags & TS_F_PDCH_MODE ? "PDCH" : "TCH/F");