1 files changed, 2 insertions, 1 deletions
diff --git a/src/mongo/db/s/migration_chunk_cloner_source_legacy.cpp b/src/mongo/db/s/migration_chunk_cloner_source_legacy.cpp
index e5b15ac679d..55b38ec4b47 100644
--- a/src/mongo/db/s/migration_chunk_cloner_source_legacy.cpp
+++ b/src/mongo/db/s/migration_chunk_cloner_source_legacy.cpp
@@ -170,7 +170,8 @@ MigrationChunkClonerSourceLegacy::MigrationChunkClonerSourceLegacy(MoveChunkRequ
                                                                    const BSONObj& shardKeyPattern)
     : _args(std::move(request)),
       _shardKeyPattern(shardKeyPattern),
-      _sessionId(MigrationSessionId::generate(_args.getFromShardId(), _args.getToShardId())) {}
+      _sessionId(MigrationSessionId::generate(_args.getFromShardId().toString(),
+                                              _args.getToShardId().toString())) {}
 
 MigrationChunkClonerSourceLegacy::~MigrationChunkClonerSourceLegacy() {
     invariant(!_deleteNotifyExec);