diff --git a/crc/crc32.c b/crc/crc32.c
index 4c21054..56ce0dd 100644
--- a/crc/crc32.c
+++ b/crc/crc32.c
@@ -1,6 +1,5 @@
 /*
-** Copyright (C) 2014 Wang Yaofu
-** All rights reserved.
+** The crc32 is licensed under the Apache License, Version 2.0, and a copy of the license is included in this file.
 **
 **Author:Wang Yaofu voipman@qq.com
 **Description: The source file of class crc32.