diff --git a/source/tutorial/upgrade-config-servers-to-replica-set.txt b/source/tutorial/upgrade-config-servers-to-replica-set.txt
index 3580920a0d1..44692fa1be0 100644
--- a/source/tutorial/upgrade-config-servers-to-replica-set.txt
+++ b/source/tutorial/upgrade-config-servers-to-replica-set.txt
@@ -22,7 +22,7 @@ a replica set can have up to 50 members.
 
 The following procedure upgrades three mirrored config servers to a
 :ref:`config server replica set <csrs>` without downtime. To use this
-procedure, all the sharded cluter binaries must be at least version
+procedure, all the sharded cluster binaries must be at least version
 3.2.4.
 
 During this procedure there will be a period of time where