diff --git a/doc/api/cluster.md b/doc/api/cluster.md
index ede975b3b57f6a..c239c44ffb7d5d 100644
--- a/doc/api/cluster.md
+++ b/doc/api/cluster.md
@@ -43,7 +43,7 @@ $ NODE_DEBUG=cluster node server.js
 23521,Master Worker 23528 online
 ```
 
-Please note that, on Windows, it is not yet possible to set up a named pipe
+Please note that on Windows, it is not yet possible to set up a named pipe
 server in a worker.
 
 ## How It Works