diff --git a/src/libopensc/card-coolkey.c b/src/libopensc/card-coolkey.c
index 53da0abc..b7985741 100644
--- a/src/libopensc/card-coolkey.c
+++ b/src/libopensc/card-coolkey.c
@@ -897,7 +897,7 @@ static int coolkey_check_sw(sc_card_t *card, unsigned int sw1, unsigned int sw2)
 	sc_log(card->ctx, 
 		"sw1 = 0x%02x, sw2 = 0x%02x\n", sw1, sw2);
 
-	if (sw1 == 0x90)
+	if (sw1 == 0x90 && sw2 == 0x00)
 		return SC_SUCCESS;
 
 	if (sw1 == 0x9c) {