diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..0ae3072
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,13 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 Vadim Kiryukhin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
diff --git a/vkbeautify.js b/vkbeautify.js
index 13cee3a..076c3d5 100644
--- a/vkbeautify.js
+++ b/vkbeautify.js
@@ -6,9 +6,8 @@
 * vkiryukhin @ gmail.com
 * http://www.eslinstructor.net/vkbeautify/
 * 
-* Dual licensed under the MIT and GPL licenses:
+* MIT license:
 *   http://www.opensource.org/licenses/mit-license.php
-*   http://www.gnu.org/licenses/gpl.html
 *
 *   Pretty print
 *
@@ -78,7 +77,7 @@ function createShiftArr(step) {
 }
 
 function vkbeautify(){
-	this.step = '    '; // 4 spaces
+	this.step = '\t'; // 4 spaces
 	this.shift = createShiftArr(this.step);
 };