diff --git a/examples/devsite-demo/index.html b/examples/devsite-demo/index.html
index 0a4601db9f..b9eb633bea 100644
--- a/examples/devsite-demo/index.html
+++ b/examples/devsite-demo/index.html
@@ -26,11 +26,11 @@
       <div id="blocklyDiv" class="main"></div>
       <div id="outputDiv" class="main">
         <select id="generateDropdown" onchange="regenerate()">
-          <option value="JavaScript">JavaScript</option>
-          <option value="Python">Python</option>
-          <option value="PHP">PHP</option>
-          <option value="Lua">Lua</option>
-          <option value="Dart">Dart</option>
+          <option value="javascript">JavaScript</option>
+          <option value="python">Python</option>
+          <option value="php">PHP</option>
+          <option value="lua">Lua</option>
+          <option value="dart">Dart</option>
         </select>
         <select id="languageDropdown" onchange="languageChange()"></select>
         <hr>
diff --git a/examples/devsite-demo/script.js b/examples/devsite-demo/script.js
index a43be1930a..f43e5b3d56 100644
--- a/examples/devsite-demo/script.js
+++ b/examples/devsite-demo/script.js
@@ -133,9 +133,9 @@ function regenerate(_e) {
     return;  // Don't update code mid-drag.
   }
   const generateLang = document.getElementById('generateDropdown').value;
-  const generator = Blockly[generateLang];
+  const generator = window[generateLang][`${generateLang}Generator`];
   const playButton = document.getElementById('playButton');
-  playButton.style.display = (generateLang === 'JavaScript') ? 'block' : 'none';
+  playButton.style.display = (generateLang === 'javascript') ? 'block' : 'none';
   const code = generator.workspaceToCode(Blockly.getMainWorkspace());
   const codeHolder = document.getElementById('codeHolder');
   codeHolder.innerHTML = '';  // Delete old code.
@@ -165,7 +165,7 @@ function execute() {
         interpreter.createNativeFunction(promptWrapper));
   };
 
-  const code = Blockly.JavaScript.workspaceToCode(Blockly.getMainWorkspace());
+  const code = javascript.javascriptGenerator.workspaceToCode(Blockly.getMainWorkspace());
   const myInterpreter = new Interpreter(code, initFunc);
   let stepsAllowed = 10000;
   while (myInterpreter.step() && stepsAllowed) {