diff --git a/libretroshare/src/tcponudp/tcpstream.h b/libretroshare/src/tcponudp/tcpstream.h
index 8d832f199..29c627554 100644
--- a/libretroshare/src/tcponudp/tcpstream.h
+++ b/libretroshare/src/tcponudp/tcpstream.h
@@ -38,7 +38,7 @@
 #include "tcppacket.h"
 #include "udppeer.h"
 
-#define MAX_SEG 		1000
+#define MAX_SEG 		1500
 #define TCP_MAX_SEQ 		UINT_MAX
 #define TCP_MAX_WIN		65500
 #define TCP_ALIVE_TIMEOUT	15      /* 15 sec ... < 20 sec UDP state limit on some firewalls */