diff --git a/src/msw/cursor.cpp b/src/msw/cursor.cpp
index 0662f7f903..3ad8200c69 100644
--- a/src/msw/cursor.cpp
+++ b/src/msw/cursor.cpp
@@ -105,7 +105,7 @@ wxCursor::wxCursor(const wxString& cursor_file, long flags, int hotSpotX, int ho
 #if wxUSE_RESOURCE_LOADING_IN_MSW
     HBITMAP hBitmap = 0;
     HPALETTE hPalette = 0;
-    bool success = ReadDIB(MBSTRINGCAST cursor_file.mb_str(wxConvFile), &hBitmap, &hPalette) != 0;
+    bool success = ReadDIB(WXSTRINGCAST cursor_file, &hBitmap, &hPalette) != 0;
     if (!success)
       return;
     if (hPalette)