diff --git a/src/app-bar.jsx b/src/app-bar.jsx
index 87c783637d25b4..2f35898b35067a 100644
--- a/src/app-bar.jsx
+++ b/src/app-bar.jsx
@@ -63,7 +63,7 @@ let AppBar = React.createClass({
       root: {
         zIndex: 5,
         width: '100%',
-        display: '-webkit-box; display: flex',
+        display: '-webkit-box; display: -webkit-flex; display: flex',
         minHeight: themeVariables.height,
         backgroundColor: themeVariables.color,
         paddingLeft: spacing.desktopGutter,