diff --git a/src/common/file.cpp b/src/common/file.cpp
index 1d28ba4975..1dd7cebdd8 100644
--- a/src/common/file.cpp
+++ b/src/common/file.cpp
@@ -541,12 +541,12 @@ bool wxTempFile::Commit()
     m_file.Close();
 
 #ifndef __WXMAC__
-    if ( wxFile::Exists(m_strName) && wxRemove(m_strName.fn_str()) != 0 ) {
+    if ( wxFile::Exists(m_strName) && wxRemove(m_strName) != 0 ) {
         wxLogSysError(_("can't remove file '%s'"), m_strName.c_str());
         return FALSE;
     }
 
-    if ( wxRename(m_strTemp.fn_str(), m_strName.fn_str()) != 0 ) {
+    if ( wxRename(m_strTemp, m_strName) != 0 ) {
         wxLogSysError(_("can't commit changes to file '%s'"), m_strName.c_str());
         return FALSE;
     }
@@ -569,7 +569,7 @@ void wxTempFile::Discard()
 {
     m_file.Close();
 #ifndef __WXMAC__
-    if ( wxRemove(m_strTemp.fn_str()) != 0 )
+    if ( wxRemove(m_strTemp) != 0 )
         wxLogSysError(_("can't remove temporary file '%s'"), m_strTemp.c_str());
 #else
     if ( remove( wxUnix2MacFilename(m_strTemp.fn_str())) != 0 )
diff --git a/src/common/fileconf.cpp b/src/common/fileconf.cpp
index 2f8bde4ad6..9ded85661c 100644
--- a/src/common/fileconf.cpp
+++ b/src/common/fileconf.cpp
@@ -881,7 +881,7 @@ bool wxFileConfig::DeleteAll()
 {
   CleanUp();
 
-  if ( wxRemove(m_strLocalFile.fn_str()) == -1 )
+  if ( wxRemove(m_strLocalFile) == -1 )
     wxLogSysError(_("can't delete user configuration file '%s'"), m_strLocalFile.c_str());
 
   m_strLocalFile = m_strGlobalFile = wxT("");
diff --git a/src/common/resource.cpp b/src/common/resource.cpp
index 90043672a6..fec430274d 100644
--- a/src/common/resource.cpp
+++ b/src/common/resource.cpp
@@ -230,7 +230,7 @@ bool wxResourceTable::ParseResourceFile(const wxString& filename)
 #ifdef __WXMAC__
   FILE *fd = fopen(wxUnix2MacFilename(filename.fn_str()), "r");
 #else	
-  FILE *fd = wxFopen(filename.fn_str(), _T("r"));
+  FILE *fd = wxFopen(filename, _T("r"));
 #endif
   if (!fd)
     return FALSE;
@@ -2779,7 +2779,7 @@ bool wxResourceParseIncludeFile(const wxString& f, wxResourceTable *table)
   if (!table)
     table = wxDefaultResourceTable;
 
-  FILE *fd = wxFopen(f.fn_str(), _T("r"));
+  FILE *fd = wxFopen(f, _T("r"));
   if (!fd)
   {
     return FALSE;
diff --git a/src/common/wxexpr.cpp b/src/common/wxexpr.cpp
index 56f4ea458a..2abeffce01 100644
--- a/src/common/wxexpr.cpp
+++ b/src/common/wxexpr.cpp
@@ -992,7 +992,7 @@ bool wxExprDatabase::Read(const wxString& filename)
 {
   noErrors = 0;
 
-  FILE *f = wxFopen(filename.fn_str(), _T("r"));
+  FILE *f = wxFopen(filename, _T("r"));
   if (f)
   {
     thewxExprDatabase = this;
@@ -1024,7 +1024,7 @@ bool wxExprDatabase::ReadFromString(const wxString& buffer)
 
 bool wxExprDatabase::Write(const wxString& fileName)
 {
-  FILE *stream = wxFopen( fileName.fn_str(), _T("w+"));
+  FILE *stream = wxFopen( fileName, _T("w+"));
   
   if (!stream)
     return FALSE;