diff --git a/common/widgets/split_button.cpp b/common/widgets/split_button.cpp
index f8f375101c..6253518769 100644
--- a/common/widgets/split_button.cpp
+++ b/common/widgets/split_button.cpp
@@ -288,7 +288,7 @@ void SPLIT_BUTTON::OnPaint( wxPaintEvent& WXUNUSED( aEvent ) )
 
     if( m_bitmap.IsOk() )
     {
-#ifdef __WXMAC__
+#ifndef __WXMSW__
         wxSize     bmpSize = m_bitmap.GetDefaultSize();
 #else
         wxSize     bmpSize = m_bitmap.GetPreferredBitmapSizeFor( this );