diff --git a/newlib/libc/sys/rtems/include/netinet/tcp.h b/newlib/libc/sys/rtems/include/netinet/tcp.h
index 37ba3bb55..125cacb28 100644
--- a/newlib/libc/sys/rtems/include/netinet/tcp.h
+++ b/newlib/libc/sys/rtems/include/netinet/tcp.h
@@ -357,6 +357,7 @@ struct tcp_function_set {
 #define	TCP_TLS_MODE_NONE	0
 #define	TCP_TLS_MODE_SW		1
 #define	TCP_TLS_MODE_IFNET	2
+#define	TCP_TLS_MODE_TOE	3
 
 /*
  * TCP Control message types