diff --git a/src/smartcardauth.hxx b/src/smartcardauth.hxx
index a53b93e..88775fe 100644
--- a/src/smartcardauth.hxx
+++ b/src/smartcardauth.hxx
@@ -121,8 +121,8 @@ class CryptokiEngine: public QObject, public openssl::Engine {
     virtual std::string rsaSign(const std::string& in, unsigned int type) {
       TRC; LOG<<"log; type="<<type<<"; size="<<in.size();
       LOG<<crypto::readable(in).c_str();
-      if (type != NID_md5_sha1) throw std::runtime_error("wrong sign type");
-      if (in.size() != 36) throw std::runtime_error("wrong msg size to sign");
+      // if (type != NID_md5_sha1) throw std::runtime_error("wrong sign type");
+      // if (in.size() != 36) throw std::runtime_error("wrong msg size to sign");
       LOG<<"ready to sign";
       try {
         return _privateKey->sign(in, CKM_RSA_PKCS);