diff --git a/README.md b/README.md
index bf7d758..a00ab17 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # wcrc32sum
-This program was original uploaded by iceeLyne at [hydrogenaudio](https://hydrogenaud.io/index.php/topic,102787.0.html). I reupload it to github in case the original website is inaccessible.
+This program was original uploaded by iceeLyne at [hydrogenaudio](https://hydrogenaud.io/index.php/topic,102787.0.html). I modified it to make it executable on Windows
 
 You can compile it with `gcc -o wcrc32sum -std=c99 -O2 wcrc32sum.c`
 
diff --git a/wcrc32sum.c b/wcrc32sum.c
index a9b4fc9..2110c11 100644
--- a/wcrc32sum.c
+++ b/wcrc32sum.c
@@ -1,8 +1,7 @@
 /*
 * The program can now work on Microsoft Windows well.
 * (c) Steven Yang (https://github.com/yangzhaofeng/wcrc32sum), 2019
-* The source is also in the PUBLIC DOMAIN.
-* I will be glad if you can notice my name when you redistribute the code.
+* The source modified is published under GNU General Public License v3.0.
 */
 
 /*