diff --git a/src/const.cstub b/src/const.cstub
index 8581d6163..b3a2ee468 100644
--- a/src/const.cstub
+++ b/src/const.cstub
@@ -376,45 +376,54 @@
 #ifdef SOL_SOCKET
   define_const(SOL_SOCKET);
 #endif
-#ifdef TCP_NODELAY
-  define_const(TCP_NODELAY);
-#endif
-#ifdef TCP_MAXSEG
-  define_const(TCP_MAXSEG);
-#endif
-#ifdef TCP_CORK
-  define_const(TCP_CORK);
-#endif
-#ifdef TCP_KEEPIDLE
-  define_const(TCP_KEEPIDLE);
-#endif
-#ifdef TCP_KEEPINTVL
-  define_const(TCP_KEEPINTVL);
-#endif
-#ifdef TCP_KEEPCNT
-  define_const(TCP_KEEPCNT);
-#endif
-#ifdef TCP_SYNCNT
-  define_const(TCP_SYNCNT);
-#endif
-#ifdef TCP_LINGER2
-  define_const(TCP_LINGER2);
-#endif
-#ifdef TCP_DEFER_ACCEPT
-  define_const(TCP_DEFER_ACCEPT);
-#endif
-#ifdef TCP_WINDOW_CLAMP
-  define_const(TCP_WINDOW_CLAMP);
-#endif
-#ifdef TCP_INFO
-  define_const(TCP_INFO);
-#endif
-#ifdef TCP_QUICKACK
-  define_const(TCP_QUICKACK);
+#ifdef TCP_CONGCTL
+  define_const(TCP_CONGCTL);
 #endif
 #ifdef TCP_CONGESTION
   define_const(TCP_CONGESTION);
 #endif
+#ifdef TCP_CORK
+  define_const(TCP_CORK);
+#endif
+#ifdef TCP_DEFER_ACCEPT
+  define_const(TCP_DEFER_ACCEPT);
+#endif
+#ifdef TCP_INFO
+  define_const(TCP_INFO);
+#endif
+#ifdef TCP_KEEPCNT
+  define_const(TCP_KEEPCNT);
+#endif
+#ifdef TCP_KEEPIDLE
+  define_const(TCP_KEEPIDLE);
+#endif
+#ifdef TCP_KEEPINIT
+  define_const(TCP_KEEPINIT);
+#endif
+#ifdef TCP_KEEPINTVL
+  define_const(TCP_KEEPINTVL);
+#endif
+#ifdef TCP_LINGER2
+  define_const(TCP_LINGER2);
+#endif
+#ifdef TCP_MAXSEG
+  define_const(TCP_MAXSEG);
+#endif
 #ifdef TCP_MD5SIG
   define_const(TCP_MD5SIG);
 #endif
+#ifdef TCP_NODELAY
+  define_const(TCP_NODELAY);
+#endif
+#ifdef TCP_QUICKACK
+  define_const(TCP_QUICKACK);
+#endif
+#ifdef TCP_SACK_ENABLE
+  define_const(TCP_SACK_ENABLE);
+#endif
+#ifdef TCP_SYNCNT
+  define_const(TCP_SYNCNT);
+#endif
+#ifdef TCP_WINDOW_CLAMP
+  define_const(TCP_WINDOW_CLAMP);
+#endif