diff --git a/index.html b/index.html
index 887b5278..815bb5a6 100644
--- a/index.html
+++ b/index.html
@@ -31,7 +31,7 @@ License:
 
 -->
 
-    <!-- <link rel="stylesheet" href="css/app.css"> -->
+    <!-- TODO : implement CSS <link rel="stylesheet" href="css/app.css"> -->
   </head>
   <body>
 	<h1>Evopedia</h1>
@@ -58,8 +58,7 @@ License:
 	<li>In some cases, the links inside an article do not work, or do not lead to the right article</li>
 	<li>It is hardly usable on a device because the buttons and inputs are too small</li>
 	</ul>
-	<br />
-	<button id="install-btn">Install</button> 
+	<br /> 
 	</div>
 	<div id="openLocalFiles" style="display: none;">
 		<br /> Please select the file titles.idx :<br /> <input type="file"
diff --git a/js/app.js b/js/app.js
index de640512..cdaa3e7b 100644
--- a/js/app.js
+++ b/js/app.js
@@ -8,28 +8,6 @@ define(function(require) {
     // http://zeptojs.com/
     var $ = require('zepto');
 
-    var installBtn = document.getElementById('install-btn');
-    if(installBtn) {
-        installBtn.style.display = 'none';
-        // If you want an installation button, add this to your HTML:
-        //
-        // <button id="install-btn">Install</button>
-        //
-        // This code shows the button if the apps platform is available
-        // and this app isn't already installed.
-        if(navigator.mozApps) {
-            installBtn.addEventListener('click', function() {
-                navigator.mozApps.install(location.href + 'manifest.webapp');
-            }, false);
-            var req = navigator.mozApps.getSelf();
-            req.onsuccess = function() {
-                if(!req.result) {
-                    installBtn.style.display = 'block';
-                }
-            };
-        }
-    }
-
     // Evopedia javascript dependencies
     var evopedia = require('evopedia');
 
