diff --git a/include/wx/filedlg.h b/include/wx/filedlg.h
index afcffa03b8..23eccc3bc7 100644
--- a/include/wx/filedlg.h
+++ b/include/wx/filedlg.h
@@ -30,7 +30,9 @@ enum
     wxOPEN              = 0x0001,
     wxSAVE              = 0x0002,
     wxOVERWRITE_PROMPT  = 0x0004,
+#if WXWIN_COMPATIBILITY_2_4
     wxHIDE_READONLY     = 0x0008,
+#endif
     wxFILE_MUST_EXIST   = 0x0010,
     wxMULTIPLE          = 0x0020,
     wxCHANGE_DIR        = 0x0040
diff --git a/src/msw/filedlg.cpp b/src/msw/filedlg.cpp
index 7888780761..775affb082 100644
--- a/src/msw/filedlg.cpp
+++ b/src/msw/filedlg.cpp
@@ -139,9 +139,14 @@ int wxFileDialog::ShowModal()
     *fileNameBuffer = wxT('\0');
     *titleBuffer    = wxT('\0');
 
+#if WXWIN_COMPATIBILITY_2_4
     long msw_flags = 0;
     if ( (m_dialogStyle & wxHIDE_READONLY) || (m_dialogStyle & wxSAVE) )
         msw_flags |= OFN_HIDEREADONLY;
+#else
+    long msw_flags = OFN_HIDEREADONLY;
+#endif
+
     if ( m_dialogStyle & wxFILE_MUST_EXIST )
         msw_flags |= OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;