--- htmlimages.c.orig	2007-11-25 23:07:11.000000000 +0100
+++ htmlimages.c	2007-11-25 23:07:24.000000000 +0100
@@ -30,6 +30,7 @@
 #endif
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 #if HAVE_SYS_TYPES_H