1 files changed, 3 insertions, 3 deletions

diff --git a/src/mongo/db/repl/oplog_buffer_collection.cpp b/src/mongo/db/repl/oplog_buffer_collection.cpp
index 818a1e205fd..90a8f120c97 100644
--- a/src/mongo/db/repl/oplog_buffer_collection.cpp
+++ b/src/mongo/db/repl/oplog_buffer_collection.cpp
@@ -47,7 +47,7 @@ namespace {
 
 const char kDefaultOplogCollectionNamespace[] = "local.temp_oplog_buffer";
 const char kOplogEntryFieldName[] = "entry";
-const BSONObj kIdObj = BSON("_id" << 1);
+const StringData kIdIdxName = "_id_"_sd;
 
 }  // namespace
 
@@ -222,7 +222,7 @@ bool OplogBufferCollection::_doPop_inlock(OperationContext* txn, Value* value) {
         return true;
     }
     auto scanDirection = StorageInterface::ScanDirection::kForward;
-    auto result = _storageInterface->deleteOne(txn, _nss, kIdObj, scanDirection);
+    auto result = _storageInterface->deleteOne(txn, _nss, kIdIdxName, scanDirection);
     if (!result.isOK()) {
         if (result != ErrorCodes::CollectionIsEmpty) {
             fassert(40162, result.getStatus());
@@ -249,7 +249,7 @@ bool OplogBufferCollection::_peekOneSide_inlock(OperationContext* txn,
     }
     auto scanDirection = front ? StorageInterface::ScanDirection::kForward
                                : StorageInterface::ScanDirection::kBackward;
-    auto result = _storageInterface->findOne(txn, _nss, kIdObj, scanDirection);
+    auto result = _storageInterface->findOne(txn, _nss, kIdIdxName, scanDirection);
     if (!result.isOK()) {
         if (result != ErrorCodes::CollectionIsEmpty) {
             fassert(40163, result.getStatus());