diff --git a/include/wx/filefn.h b/include/wx/filefn.h
index 75313630d8..42bc28cd00 100644
--- a/include/wx/filefn.h
+++ b/include/wx/filefn.h
@@ -78,6 +78,9 @@ WXDLLEXPORT_DATA(extern const wxChar*) wxEmptyString;
     || ( defined(__MINGW32__) && !defined(__WINE__) && wxCHECK_W32API_VERSION( 0, 5 ) ) \
     || ( defined(__MWERKS__) && defined(__WXMSW__) )
     // functions
+#ifdef __BORLANDC__
+    #define   _tell        tell
+#endif
     #define   wxClose      _close
     #define   wxRead       _read
     #define   wxWrite      _write
@@ -89,7 +92,11 @@ WXDLLEXPORT_DATA(extern const wxChar*) wxEmptyString;
 
     #if wxUSE_UNICODE
         #if wxUSE_UNICODE_MSLU
-            #define   wxOpen       wxMSLU__wopen
+#ifdef __BORLANDC__
+            #define   wxOpen       open
+#else
+            #define   wxOpen       _open
+#endif 
             #define   wxAccess     wxMSLU__waccess
             #define   wxMkDir      wxMSLU__wmkdir
             #define   wxRmDir      wxMSLU__wrmdir
@@ -113,14 +120,16 @@ WXDLLEXPORT_DATA(extern const wxChar*) wxEmptyString;
     #define   wxStructStat struct _stat
 
     // constants (unless already defined by the user code)
-    #ifndef O_RDONLY
+    #if !defined(O_RDONLY) && !defined(__BORLANDC__)
         #define   O_RDONLY    _O_RDONLY
         #define   O_WRONLY    _O_WRONLY
         #define   O_RDWR      _O_RDWR
         #define   O_EXCL      _O_EXCL
         #define   O_CREAT     _O_CREAT
         #define   O_BINARY    _O_BINARY
+    #endif
 
+    #ifndef __BORLANDC__
         #define   S_IFMT      _S_IFMT
         #define   S_IFDIR     _S_IFDIR
         #define   S_IFREG     _S_IFREG
diff --git a/include/wx/msw/mslu.h b/include/wx/msw/mslu.h
index e9ed1ce901..e8700dd40c 100644
--- a/include/wx/msw/mslu.h
+++ b/include/wx/msw/mslu.h
@@ -58,7 +58,8 @@ WXDLLEXPORT int wxMSLU__tremove(const wxChar *name);
 
 #if defined( __VISUALC__ ) \
     || ( defined(__MINGW32__) && wxCHECK_W32API_VERSION( 0, 5 ) ) \
-    || ( defined(__MWERKS__) && defined(__WXMSW__) )
+    || ( defined(__MWERKS__) && defined(__WXMSW__) ) \
+    || ( defined(__BORLANDC__) && (__BORLANDC__ > 0x460) )
 WXDLLEXPORT int wxMSLU__wopen(const wxChar *name, int flags, int mode);
 WXDLLEXPORT int wxMSLU__waccess(const wxChar *name, int mode);
 WXDLLEXPORT int wxMSLU__wmkdir(const wxChar *name);
diff --git a/src/msw/mslu.cpp b/src/msw/mslu.cpp
index be480f683f..d4bfce13e5 100644
--- a/src/msw/mslu.cpp
+++ b/src/msw/mslu.cpp
@@ -18,6 +18,7 @@
 
 #ifdef __BORLANDC__
 #pragma hdrstop
+#include <dir.h>
 #endif
 
 #ifndef WX_PRECOMP
@@ -148,12 +149,17 @@ WXDLLEXPORT int wxMSLU__tremove(const wxChar *name)
 
 #if defined( __VISUALC__ ) \
     || ( defined(__MINGW32__) && wxCHECK_W32API_VERSION( 0, 5 ) ) \
-    || ( defined(__MWERKS__) && defined(__WXMSW__) )
+    || ( defined(__MWERKS__) && defined(__WXMSW__) ) \
+    || ( defined(__BORLANDC__) && (__BORLANDC__ > 0x460) )
 
 WXDLLEXPORT int wxMSLU__wopen(const wxChar *name, int flags, int mode)
 {
     if ( wxUsingUnicowsDll() )
+#ifdef __BORLANDC__
+        return open(wxConvFile.cWX2MB(name), flags, mode);
+#else
         return _open(wxConvFile.cWX2MB(name), flags, mode);
+#endif
     else
         return _wopen(name, flags, mode);
 }