--- src/shared/images.c.old	2011-04-02 19:31:52.000000000 +0200
+++ src/shared/images.c	2011-04-02 19:32:13.000000000 +0200
@@ -32,6 +32,7 @@
 
 #include <jpeglib.h>
 #include <png.h>
+#include <zlib.h>
 
 /** image formats, tried in this order */
 static char *IMAGE_TYPES[] = { "tga", "png", "jpg", NULL };