diff --git a/lang/cpp/src/gpgrevokekeyeditinteractor.h b/lang/cpp/src/gpgrevokekeyeditinteractor.h
index c64ca015..c33a71b6 100644
--- a/lang/cpp/src/gpgrevokekeyeditinteractor.h
+++ b/lang/cpp/src/gpgrevokekeyeditinteractor.h
@@ -1,62 +1,62 @@
 /*
   gpgrevokekeyeditinteractor.h - Edit Interactor to revoke own OpenPGP keys
   Copyright (c) 2022 g10 Code GmbH
   Software engineering by Ingo Klöcker <dev@ingo-kloecker.de>
 
   This file is part of GPGME++.
 
   GPGME++ is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
 
   GPGME++ is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU Library General Public License for more details.
 
   You should have received a copy of the GNU Library General Public License
   along with GPGME++; see the file COPYING.LIB.  If not, write to the
   Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
 */
 
 #ifndef __GPGMEPP_GPGREVOKEKEYEDITINTERACTOR_H__
 #define __GPGMEPP_GPGREVOKEKEYEDITINTERACTOR_H__
 
 #include "editinteractor.h"
 #include "global.h"
 
 #include <memory>
 #include <vector>
 
 namespace GpgME
 {
 
 /** Edit interactor to revoke the key a key edit operation is working on.
  *  Supports revocation of own keys only. */
 class GPGMEPP_EXPORT GpgRevokeKeyEditInteractor : public EditInteractor
 {
 public:
     GpgRevokeKeyEditInteractor();
     ~GpgRevokeKeyEditInteractor() override;
 
     /** Sets the reason for the revocation. The reason defaults to \c Unspecified.
      *  \a description can be used for adding a comment for the revocation. The
      *  individual elements of \a description must be non-empty strings and they
      *  must not contain any endline characters.
      */
     void setReason(RevocationReason reason, const std::vector<std::string> &description = {});
 
 private:
     const char *action(Error &err) const override;
     unsigned int nextState(unsigned int statusCode, const char *args, Error &err) const override;
 
 private:
-    class Private;
+    class GPGMEPP_NO_EXPORT Private;
     const std::unique_ptr<Private> d;
 };
 
 } // namespace GpgME
 
 #endif // __GPGMEPP_GPGREVOKEKEYEDITINTERACTOR_H__