diff --git a/flag_encoder/index.html b/flag_encoder/index.html
index 1c6433e..fb04c7c 100644
--- a/flag_encoder/index.html
+++ b/flag_encoder/index.html
@@ -3,8 +3,8 @@
 	<head>
 		<meta charset="utf-8"/>
 		<title>CryptoCTF zero-knowledge flag-submission encoder v0.1</title>
-		<script src="bn.js"></script>
-		<script src="nano-ethereum-signer-mod.js"></script>
+		<script type="text/javascript" src="bn.js"></script>
+		<script type="text/javascript" src="nano-ethereum-signer-mod.js"></script>
 	</head>
 
 	<body>
@@ -16,7 +16,7 @@
 	<label for="inp-contest-id">contest ID:</label> <input id="inp-contest-id" type="text" size="66" pattern="0x[0-9a-fA-F]+|[0-9]+" placeholder="0x0000000000000000000000000000000000000000000000000000000000000000"/><br/>
 	<label for="inp-challenge-id">challenge ID:</label> <input id="inp-challenge-id" type="integer" size="4" placeholder="0" accesskey="c"/>-->
 
-	<script>
+	<script type="text/javascript">
 		var inpContestantAddress = document.querySelector("#inp-contestant-address");
 		var inpFlag = document.querySelector("#inp-flag");
 		var outpObscuredFlag = document.querySelector("#outp-obscured-flag");
