diff --git a/README.md b/README.md
index 32ffdea..55bd75a 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,10 @@ Parameter | return
 ## License
 > [MIT](https://github.com/xn-02f/md5/blob/master/LICENSE)
 
+<br>
+<br>
 <div align=center>
-    &copy; 2019 &nbsp; | &nbsp; <a href="https://xn-02f.github.io" target="_blank">xn-02f</a>
+    <sub>
+        &copy; 2019 &nbsp; | &nbsp; <a href="https://xn-02f.github.io" target="_blank">xn-02f</a>
+    </sub>
 </div>
diff --git a/md5.js b/md5.js
index 124a68a..0c7d988 100644
--- a/md5.js
+++ b/md5.js
@@ -7,7 +7,7 @@
 /**
  * Convert string to md5 hash.
  *
- * @param {string} string The raw string you want to convert.
+ * @param {string} value The raw string you want to convert.
  * @return {string} The hexadecimal hash string that is handled and converted.
  */
 module.exports = (value) => {
diff --git a/package.json b/package.json
index ae4e399..6fb61e7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@xn-02f/md5",
-  "version": "1.2.0",
+  "version": "2.0.0",
   "description": "A MD5 library without dependencies for node, convert string to MD5 hash.",
   "main": "md5.js",
   "types": "md5.d.ts",