diff -Nur 0.5.1/libretroshare/src/upnp/UPnPBase.cpp 0.5.1.new//libretroshare/src/upnp/UPnPBase.cpp
--- 0.5.1/libretroshare/src/upnp/UPnPBase.cpp	2011-02-12 13:45:03.000000000 +0100
+++ 0.5.1.new//libretroshare/src/upnp/UPnPBase.cpp	2011-08-09 14:38:15.360000079 +0200
@@ -25,7 +25,7 @@
 //This file uses libupnp
 
 #define UPNP_C
-
+#include <string.h>
 #include "UPnPBase.h"
 #include <stdio.h>