diff --git a/src/driver_pcsc.c b/src/driver_pcsc.c
index d028e55..5102512 100644
--- a/src/driver_pcsc.c
+++ b/src/driver_pcsc.c
@@ -83,6 +83,7 @@
 
 static int pcsc_reader_open_slot(struct card_reader_slot *slot)
 {
+#if 0
 	struct osim_card_hdl *card;
 	LONG rc;
 
@@ -101,7 +102,8 @@
 	rh->card = card;
 
 end:
-	return NULL;
+#endif
+	return -1;
 }