diff --git a/source/applications/replication.txt b/source/applications/replication.txt
index 5d59569ffe2..91c20b74a71 100644
--- a/source/applications/replication.txt
+++ b/source/applications/replication.txt
@@ -496,9 +496,9 @@ Member Selection
 ````````````````
 
 Clients, by way of their drivers, and :program:`mongos` instances for
-sharded clusters periodically call :dbcommand:`isMaster` on all members of the
-replica set to update their view of the set's state, and to determine latency
-from the application to each :program:`mongod` instance.
+sharded clusters periodically update their view of the set's state: which
+members are up or down, which is primary, and the latency to each
+:program:`mongod` instance.
 
 For any operation that targets a member *other* than the
 :term:`primary`, the driver: