diff --git a/source/core/sharded-cluster-security.txt b/source/core/sharded-cluster-security.txt
index b1bb94d718a..eb02716790a 100644
--- a/source/core/sharded-cluster-security.txt
+++ b/source/core/sharded-cluster-security.txt
@@ -6,8 +6,8 @@ Sharded Cluster Security
 
 .. default-domain:: mongodb
 
-In most respects security for sharded clusters similar to other
-MongoDB deployments. Sharded clusters use the same :doc:`keyfile
+In most respects, security for a sharded cluster is similar to other
+MongoDB deployments. A sharded cluster uses the same :doc:`keyfile
 </core/inter-process-authentication>` and :doc:`access control
 </core/access-control>` as all MongoDB deployments. However, there are
 additional considerations when using authentication with sharded