diff -ur mistbot-0.9.orig/modules/httpsock.cc mistbot-0.9/modules/httpsock.cc
--- mistbot-0.9.orig/modules/httpsock.cc	2007-10-27 14:36:43.000000000 +0300
+++ mistbot-0.9/modules/httpsock.cc	2009-06-10 00:26:48.000000000 +0300
@@ -6,6 +6,8 @@
  * version.
  */
 
+#include <cstdio>
+
 #include "module.hh"
 #include "httpsock.hh"
 #include "mistbot.hh"