diff --git a/db/compaction_job.cc b/db/compaction_job.cc
index 9b2c0a885..32907c077 100644
--- a/db/compaction_job.cc
+++ b/db/compaction_job.cc
@@ -145,6 +145,7 @@ struct CompactionJob::SubcompactionState {
     outputs = std::move(o.outputs);
     outfile = std::move(o.outfile);
     builder = std::move(o.builder);
+    current_output_file_size = std::move(o.current_output_file_size);
     total_bytes = std::move(o.total_bytes);
     num_input_records = std::move(o.num_input_records);
     num_output_records = std::move(o.num_output_records);