diff --git a/src/msw/bitmap.cpp b/src/msw/bitmap.cpp
index 570c673c49..38a27a4092 100644
--- a/src/msw/bitmap.cpp
+++ b/src/msw/bitmap.cpp
@@ -264,23 +264,25 @@ wxGDIRefData *wxBitmap::CloneGDIRefData(const wxGDIRefData *dataOrig) const
     //        course (except in !wxUSE_WXDIB), but is completely illogical
     wxBitmap *self = wx_const_cast(wxBitmap *, this);
 
+    wxBitmapRefData *selfdata;
 #if wxUSE_WXDIB
     // copy the other bitmap
     if ( data->m_hBitmap )
     {
         wxDIB dib((HBITMAP)(data->m_hBitmap));
         self->CopyFromDIB(dib);
+
+        selfdata = wx_static_cast(wxBitmapRefData *, m_refData);
+        selfdata->m_hasAlpha = data->m_hasAlpha;
     }
     else
 #endif // wxUSE_WXDIB
     {
         // copy the bitmap data
-        self->m_refData = new wxBitmapRefData(*data);
+        selfdata = new wxBitmapRefData(*data);
+        self->m_refData = selfdata;
     }
 
-    wxBitmapRefData * const
-        selfdata = wx_static_cast(wxBitmapRefData *, m_refData);
-
     // copy also the mask
     wxMask * const maskSrc = data->GetMask();
     if ( maskSrc )