diff --git a/include/wx/rawbmp.h b/include/wx/rawbmp.h
index e5d03d0a6d..2d43d81e29 100644
--- a/include/wx/rawbmp.h
+++ b/include/wx/rawbmp.h
@@ -275,7 +275,7 @@ struct WXDLLEXPORT wxPixelDataOut<wxImage>
             typedef wxImagePixelFormat PixelFormat;
 
             // the type of the pixel components
-            typedef typename PixelFormat::ChannelType ChannelType;
+            typedef typename dummyPixelFormat::ChannelType ChannelType;
 
             // the pixel data we're working with
             typedef