diff --git a/atom/browser/default_app/index.html b/atom/browser/default_app/index.html
index 0194f582693f..2b85bd7b37d9 100644
--- a/atom/browser/default_app/index.html
+++ b/atom/browser/default_app/index.html
@@ -2,6 +2,12 @@
 <head>
   <title>Atom Shell</title>
   <style>
+    html {
+      height: 100%;
+      width: 100%;
+      overflow: hidden;
+    }
+
     body {
       color: #555;
       font-family: 'Open Sans',Helvetica,Arial,sans-serif;
