diff --git a/source/tutorial/deploy-shard-cluster.txt b/source/tutorial/deploy-shard-cluster.txt
index 38922fa7938..264dc011010 100644
--- a/source/tutorial/deploy-shard-cluster.txt
+++ b/source/tutorial/deploy-shard-cluster.txt
@@ -115,7 +115,7 @@ Create the Shard Replica Sets
 
 For a production deployment, use a replica set with at least three
 members. For testing purposes, you can create a single-member replica
-set.
+set. Use different replica set names for Config Server and Shard replica sets.  
 
 .. include:: /includes/steps/deploy-sharded-cluster-shard-replica-noauth.rst