diff --git a/libretroshare/src/tcponudp/tou.h b/libretroshare/src/tcponudp/tou.h
index 49a797d35..3c5461d1a 100644
--- a/libretroshare/src/tcponudp/tou.h
+++ b/libretroshare/src/tcponudp/tou.h
@@ -43,6 +43,7 @@
 	#include <winsock2.h>
 	#include <ws2tcpip.h>
 	#include <stdio.h>
+	#include <stdint.h>
 	typedef int socklen_t;
 #endif