diff -Naur alevt-1.6.2/exp-gfx.c alevt-1.6.2-mod/exp-gfx.c
--- alevt-1.6.2/exp-gfx.c	2007-12-03 03:56:06.000000000 +0100
+++ alevt-1.6.2-mod/exp-gfx.c	2012-07-26 00:21:05.518604118 +0200
@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <zlib.h>
 
 #include "lang.h"
 #include "export.h"