diff --git a/index.html b/index.html
index 89bafb9..48b1c9d 100644
--- a/index.html
+++ b/index.html
@@ -310,7 +310,7 @@ <h2>File-List</h2>
 		<script src="libs/lz-string.min.js"></script>
 		<script src="scripts/RPGFile.js?ver=1.1"></script>
 		<script src="scripts/ErrorException.js?ver=1.0"></script>
-		<script src="scripts/Decrypter.js?ver=1.2"></script>
+		<script src="scripts/Decrypter.js?ver=1.2.1"></script>
 		<script src="scripts/ZIP.js?ver=0.3"></script>
 		<script src="scripts/functions.js?ver=1.2.1"></script>
 	</body>
diff --git a/scripts/Decrypter.js b/scripts/Decrypter.js
index 9588985..441ecda 100644
--- a/scripts/Decrypter.js
+++ b/scripts/Decrypter.js
@@ -273,7 +273,8 @@ Decrypter.prototype.encryptFile = function(rpgFile, callback) {
 Decrypter.detectEncryptionCode = function(rpgFile, callback) {
 	var reader = new FileReader();
 
-	reader.addEventListener('load', function() {
+	reader[window.addEventListener ? 'addEventListener' : 'attachEvent']
+	(window.addEventListener ? 'load' : 'onload', function() {
 		var key;
 		var fileContent;