diff --git a/doc/api/cluster.md b/doc/api/cluster.md
index c655305b4c25a8..d22c46ee383623 100644
--- a/doc/api/cluster.md
+++ b/doc/api/cluster.md
@@ -1062,7 +1062,7 @@ added: v0.7.0
 
 * {Object}
 
-A hash that stores the active worker objects, keyed by `id` field. Makes it
+A hash that stores the active worker objects, keyed by `id` field. This makes it
 easy to loop through all the workers. It is only available in the primary
 process.