diff --git a/source/tutorial/rotate-x509-membership-certificates.txt b/source/tutorial/rotate-x509-membership-certificates.txt
index ede10fe5902..6df6a48fafc 100644
--- a/source/tutorial/rotate-x509-membership-certificates.txt
+++ b/source/tutorial/rotate-x509-membership-certificates.txt
@@ -110,7 +110,7 @@ member (see next step).
 ~~~~~~~~~~~~~~~~~~~~~~
 
 Once you have modified the configuration for all the members,
-restart each secondaries and then the primary.
+restart each secondary and then the primary.
 
 **For each secondary member**, connect a :binary:`~bin.mongo` shell to the
 member and: