diff --git a/include/types/proto_tcp.h b/include/types/proto_tcp.h
index 74863b4..ac9d328 100644
--- a/include/types/proto_tcp.h
+++ b/include/types/proto_tcp.h
@@ -34,6 +34,7 @@
 	TCP_ACT_REJECT = 2,
 	TCP_ACT_TRK_SC1 = 3, /* TCP request tracking : must be contiguous */
 	TCP_ACT_TRK_SC2 = 4,
+	TCP_ACT_TRK_SC3 = 5,
 };
 
 struct tcp_rule {