diff --git a/demo/emmet.html b/demo/emmet.html
index 57f13f67..d5a7c0e0 100644
--- a/demo/emmet.html
+++ b/demo/emmet.html
@@ -27,7 +27,7 @@
 <!-- load ace emmet extension -->
 <script src="../build/src-noconflict/ext-emmet.js"></script>
 <!-- load core emmet files -->
-<script src="http://nightwing.github.io/emmet-core/emmet.js"></script>
+<script src="//nightwing.github.io/emmet-core/emmet.js"></script>
 <script>
     // trigger extension
     ace.require("ace/ext/emmet");
diff --git a/demo/kitchen-sink/demo.js b/demo/kitchen-sink/demo.js
index cf680b53..28d6a9fb 100644
--- a/demo/kitchen-sink/demo.js
+++ b/demo/kitchen-sink/demo.js
@@ -548,7 +548,7 @@ new StatusBar(env.editor, cmdLine.container);
 
 
 var Emmet = require("ace/ext/emmet");
-net.loadScript("http://nightwing.github.io/emmet-core/emmet.js", function() {
+net.loadScript("//nightwing.github.io/emmet-core/emmet.js", function() {
     Emmet.setCore(window.emmet);
     env.editor.setOption("enableEmmet", true);
 });
diff --git a/kitchen-sink.html b/kitchen-sink.html
index c149c484..af864eae 100644
--- a/kitchen-sink.html
+++ b/kitchen-sink.html
@@ -13,13 +13,13 @@
 
     <!--DEVEL-->
       <link rel="stylesheet" href="demo/kitchen-sink/styles.css" type="text/css" media="screen" charset="utf-8">
-      <script async="true" src="http://use.edgefonts.net/source-code-pro.js"></script>
+      <script async="true" src="//use.edgefonts.net/source-code-pro.js"></script>
     <!--DEVEL-->
 
     <link href="./doc/site/images/favicon.ico" rel="icon" type="image/x-icon">
     <!--PACKAGE
       <link rel="stylesheet" href="kitchen-sink/styles.css" type="text/css" media="screen" charset="utf-8">
-      <script async="true" src="http://use.edgefonts.net/source-code-pro.js"></script>
+      <script async="true" src="//use.edgefonts.net/source-code-pro.js"></script>
     PACKAGE-->
 </head>
 <body>
