diff --git a/ts/packages/shell/src/renderer/index.html b/ts/packages/shell/src/renderer/index.html
index 69257bf13..5f8adc27d 100644
--- a/ts/packages/shell/src/renderer/index.html
+++ b/ts/packages/shell/src/renderer/index.html
@@ -5,6 +5,7 @@
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Active TypeAgent</title>
     <link href="./assets/styles.less" type="text/css" rel="stylesheet" />
     <link
