diff --git a/README.md b/README.md
index fe4764771f..e17645ee67 100644
--- a/README.md
+++ b/README.md
@@ -404,7 +404,7 @@ const node = new IPFS({
       Swarm: [
         "/ip4/0.0.0.0/tcp/4002",
         "/ip4/127.0.0.1/tcp/4003/ws",
-        "/dns4/wrtc-star.discovery.libp2p.io/tcp/433/wss/p2p-webrtc-star"
+        "/dns4/wrtc-star.discovery.libp2p.io/tcp/443/wss/p2p-webrtc-star"
       ]
     }
   },