diff --git a/utils/osmo-sim-test.c b/utils/osmo-sim-test.c
index 3acbd71..244c2df 100644
--- a/utils/osmo-sim-test.c
+++ b/utils/osmo-sim-test.c
@@ -374,10 +374,10 @@
 	struct msgb *msg;
 	int rc;
 
-	reader = osim_reader_open(0, "", NULL);
+	reader = osim_reader_open(OSIM_READER_DRV_PCSC, 0, "", NULL);
 	if (!reader)
 		exit(1);
-	card = osim_card_open(reader);
+	card = osim_card_open(reader, OSIM_PROTO_T0);
 	if (!card)
 		exit(2);
 	chan = llist_entry(card->channels.next, struct osim_chan_hdl, list);