diff --git a/kmbox/mbox_export.h b/kmbox/mbox_export.h
index 13ec34753..43c85943d 100644
--- a/kmbox/mbox_export.h
+++ b/kmbox/mbox_export.h
@@ -1,40 +1,40 @@
 /*  This file is part of the KDE project
     Copyright (C) 2007 David Faure <faure@kde.org>
 
     This library 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.
 
     This library 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 this library; 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 MBOX_EXPORT_H
 #define MBOX_EXPORT_H
 
 /* needed for KDE_EXPORT and KDE_IMPORT macros */
 #include <kdemacros.h>
 
 #ifndef MBOX_EXPORT
-# if defined(MAKE_MAILDIR_LIB)
-   /* We are building this library */ 
+# if defined(MAKE_MBOX_LIB)
+   /* We are building this library */
 #  define MBOX_EXPORT KDE_EXPORT
 # else
-   /* We are using this library */ 
+   /* We are using this library */
 #  define MBOX_EXPORT KDE_IMPORT
 # endif
 #endif
 
 # ifndef MBOX_EXPORT_DEPRECATED
 #  define MBOX_EXPORT_DEPRECATED KDE_DEPRECATED MBOX_EXPORT
 # endif
 
 #endif