diff --git a/src/suisseid.hxx b/src/suisseid.hxx
index 22ce645..e38632a 100644
--- a/src/suisseid.hxx
+++ b/src/suisseid.hxx
@@ -329,7 +329,7 @@ namespace suisseid {
                         "transaction (SCardTransmit) fails "
                         "with SCARD_W_RESET_CARD (0x80100068). "
                         "Retry Nr. "<<applebug);
-              Certificate c(certificate(const std::string& keylabel));
+              Certificate c(certificate(keylabel));
               applebug = 0; // successful, reset counter
               return c;
             }