1 files changed, 2 insertions, 2 deletions
diff --git a/src/mongo/s/client/rs_local_client.cpp b/src/mongo/s/client/rs_local_client.cpp
index fdb386a3bcf..e1ec4917f8f 100644
--- a/src/mongo/s/client/rs_local_client.cpp
+++ b/src/mongo/s/client/rs_local_client.cpp
@@ -56,7 +56,7 @@ void RSLocalClient::_updateLastOpTimeFromClient(OperationContext* opCtx,
         return;
     }
 
-    stdx::lock_guard<stdx::mutex> lk(_mutex);
+    stdx::lock_guard<Latch> lk(_mutex);
     if (lastOpTimeFromClient >= _lastOpTime) {
         // It's always possible for lastOpTimeFromClient to be less than _lastOpTime if another
         // thread started and completed a write through this ShardLocal (updating _lastOpTime)
@@ -66,7 +66,7 @@ void RSLocalClient::_updateLastOpTimeFromClient(OperationContext* opCtx,
 }
 
 repl::OpTime RSLocalClient::_getLastOpTime() {
-    stdx::lock_guard<stdx::mutex> lk(_mutex);
+    stdx::lock_guard<Latch> lk(_mutex);
     return _lastOpTime;
 }