$OpenBSD: patch-include_mhgui_ImageData_h,v 1.2 2011/10/23 11:06:17 ajacoutot Exp $
--- include/mhgui/ImageData.h.orig	Wed Dec 12 22:07:20 2007
+++ include/mhgui/ImageData.h	Sun Oct 23 11:33:36 2011
@@ -50,7 +50,7 @@
 
 
 #if defined(USE_PNGLIB)
-  #include <png.h>
+  #include <libpng/png.h>
 #endif
 
 using std::string;
