diff --git a/userspace/libraries/LibC/include/netinet/tcp.h b/userspace/libraries/LibC/include/netinet/tcp.h
index 3bdfc09c..e098b472 100644
--- a/userspace/libraries/LibC/include/netinet/tcp.h
+++ b/userspace/libraries/LibC/include/netinet/tcp.h
@@ -8,6 +8,7 @@
 __BEGIN_DECLS
 
 #define TCP_NODELAY 1
+#define TCP_MAXSEG  2
 
 __END_DECLS