diff --git a/src/msw/filedlg.cpp b/src/msw/filedlg.cpp
index 0c6e38681d..5a0b7bd17a 100644
--- a/src/msw/filedlg.cpp
+++ b/src/msw/filedlg.cpp
@@ -656,8 +656,7 @@ int wxFileDialog::ShowModal()
 
         m_filterIndex = (int)of.nFilterIndex - 1;
 
-        if ( !of.nFileExtension ||
-             (of.nFileExtension && fileNameBuffer[of.nFileExtension] == wxT('\0')) )
+        if ( !of.nFileExtension || fileNameBuffer[of.nFileExtension] == wxT('\0') )
         {
             // User has typed a filename without an extension:
             const wxChar* extension = filterBuffer.t_str();