diff --git a/src/pkcs15init/pkcs15-cardos.c b/src/pkcs15init/pkcs15-cardos.c
index a79c59b3..fc6b9649 100644
--- a/src/pkcs15init/pkcs15-cardos.c
+++ b/src/pkcs15init/pkcs15-cardos.c
@@ -624,7 +624,8 @@ static int cardos_put_key(sc_profile_t *profile, sc_card_t *card,
 	if (pin_id < 0)
 		pin_id = 0;
 
-	if (key_info->modulus_length > 1024 && card->type == SC_CARD_TYPE_CARDOS_M4_2) {
+	if (key_info->modulus_length > 1024 && (card->type == SC_CARD_TYPE_CARDOS_M4_2 ||
+	    card->type == SC_CARD_TYPE_CARDOS_M4_3)) {
 		r = cardos_store_key_component(card, algorithm, key_id, pin_id, 0,
 			key->p.data, key->p.len, 0, 0);
 		if (r != SC_SUCCESS)