diff --git a/crc/crchash.cpp b/crc/crchash.cpp
index 67b3b0c..945e0b8 100644
--- a/crc/crchash.cpp
+++ b/crc/crchash.cpp
@@ -1,6 +1,5 @@
 /*
-** Copyright (C) 2014 Wang Yaofu
-** All rights reserved.
+** The crc hash 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 CrcHash.