diff --git a/source/reference/method/sh.shardCollection.txt b/source/reference/method/sh.shardCollection.txt
index 47899d297a9..cdcdbf9bf71 100644
--- a/source/reference/method/sh.shardCollection.txt
+++ b/source/reference/method/sh.shardCollection.txt
@@ -4,9 +4,9 @@ sh.shardCollection()
 
 .. default-domain:: mongodb
 
-.. method:: sh.shardCollection(collection,key,unique)
+.. method:: sh.shardCollection(namespace,key,unique)
 
-   :param string collection: The namespace of the collection to shard.
+   :param string namespace: The :term:`namespace` of the collection to shard.
 
    :param document key: