diff --git a/api/source/mk_track.cpp b/api/source/mk_track.cpp
index aaef0caa..6b620093 100644
--- a/api/source/mk_track.cpp
+++ b/api/source/mk_track.cpp
@@ -1,4 +1,4 @@
-/*
+/*
  * Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
  *
  * This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).