--- powermanga-0.91/src/powermanga.h.orig	2012-10-15 12:40:53.913154664 +0200
+++ powermanga-0.91/src/powermanga.h	2012-10-15 12:41:02.690060653 +0200
@@ -149,6 +149,7 @@
 
 #ifdef PNG_EXPORT_ENABLE
 #include <png.h>
+#include <zlib.h>
 #endif
 
 #if !defined(_WIN32_WCE)