diff --git a/swisssurfer/src/smartcardauth.hxx b/swisssurfer/src/smartcardauth.hxx
index 03935d9..b347503 100644
--- a/swisssurfer/src/smartcardauth.hxx
+++ b/swisssurfer/src/smartcardauth.hxx
@@ -69,7 +69,8 @@ class CryptokiEngine: public QObject, public openssl::Engine {
         RSA* rsa(0);
         do {
           rsa = ((RSA*)privkey.handle());
-          RSA_set_method(rsa, ENGINE_get_RSA(_e));
+          //! @todo call RSA_free(rsa); later, see #82
+          rsa = RSA_new_method(_e);
           set(rsa->n, privateKey, CKA_MODULUS, "CKA_MODULUS");
           set(rsa->e, privateKey, CKA_PUBLIC_EXPONENT, "CKA_PUBLIC_EXPONENT");
           set(rsa->d, privateKey, CKA_PRIVATE_EXPONENT, "CKA_PRIVATE_EXPONENT");