diff --git a/include/rocksdb/options.h b/include/rocksdb/options.h
index 33803eb1f67b..5a8d8a9eef55 100644
--- a/include/rocksdb/options.h
+++ b/include/rocksdb/options.h
@@ -435,7 +435,7 @@ struct CompactionServiceScheduleResponse {
   CompactionServiceScheduleResponse(std::string scheduled_job_id_,
                                     CompactionServiceJobStatus status_)
       : scheduled_job_id(scheduled_job_id_), status(status_) {}
-  CompactionServiceScheduleResponse(CompactionServiceJobStatus status_)
+  explicit CompactionServiceScheduleResponse(CompactionServiceJobStatus status_)
       : status(status_) {}
 };