diff --git a/src/libopensc/card-gemsafeV1.c b/src/libopensc/card-gemsafeV1.c
index 58da63dc..171690c8 100644
--- a/src/libopensc/card-gemsafeV1.c
+++ b/src/libopensc/card-gemsafeV1.c
@@ -180,6 +180,7 @@ static int gemsafe_init(struct sc_card *card)
 		flags  = SC_ALGORITHM_RSA_PAD_PKCS1;
 		flags |= SC_ALGORITHM_RSA_PAD_ISO9796;
 		flags |= SC_ALGORITHM_ONBOARD_KEY_GEN;
+		flags |= SC_ALGORITHM_RSA_HASH_NONE;
 
 		_sc_card_add_rsa_alg(card,  512, flags, 0);
 		_sc_card_add_rsa_alg(card,  768, flags, 0);