diff --git a/include/wx/mac/corefoundation/cfstring.h b/include/wx/mac/corefoundation/cfstring.h
index 16a95cf2ff..4887956206 100644
--- a/include/wx/mac/corefoundation/cfstring.h
+++ b/include/wx/mac/corefoundation/cfstring.h
@@ -7,6 +7,7 @@
 // RCS-ID:      $Id$
 // Copyright:   (c) Stefan Csomor
 // Licence:     wxWindows licence
+// Usage:       Darwin (base library)
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef __WX_CFSTRINGHOLDER_H__
diff --git a/src/common/intl.cpp b/src/common/intl.cpp
index a1e7d4d0b8..7c8323ab18 100644
--- a/src/common/intl.cpp
+++ b/src/common/intl.cpp
@@ -76,7 +76,7 @@
     #include "wx/mac/private.h"  // includes mac headers
 #endif
 
-#if defined(__WXOSX__)
+#if defined(__DARWIN__)
 	#include "wx/mac/corefoundation/cfref.h"
 	#include <CoreFoundation/CFLocale.h>
 	#include "wx/mac/corefoundation/cfstring.h"
@@ -2902,7 +2902,7 @@ wxString wxLocale::GetInfo(wxLocaleInfo index, wxLocaleCategory WXUNUSED(cat))
     return str;
 }
 
-#elif defined(__WXOSX__)
+#elif defined(__DARWIN__)
 
 /* static */
 wxString wxLocale::GetInfo(wxLocaleInfo index, wxLocaleCategory WXUNUSED(cat))
@@ -2928,7 +2928,7 @@ wxString wxLocale::GetInfo(wxLocaleInfo index, wxLocaleCategory WXUNUSED(cat))
     return str.AsString();
 }
 
-#else // !__WXMSW__ && !__WXMAC__
+#else // !__WXMSW__ && !__DARWIN__
 
 /* static */
 wxString wxLocale::GetInfo(wxLocaleInfo index, wxLocaleCategory cat)
diff --git a/src/mac/corefoundation/cfstring.cpp b/src/mac/corefoundation/cfstring.cpp
index 541cef0c5b..95a2c7a042 100644
--- a/src/mac/corefoundation/cfstring.cpp
+++ b/src/mac/corefoundation/cfstring.cpp
@@ -7,6 +7,7 @@
 // RCS-ID:      $Id$
 // Copyright:   (c) Stefan Csomor
 // Licence:     wxWindows licence
+// Usage:       Darwin (base library)
 /////////////////////////////////////////////////////////////////////////////
 
 #include "wx/wxprec.h"