diff --git a/skinStyles/mobile.startup/Overlay.less b/skinStyles/mobile.startup/Overlay.less
index 79c06bc29..9ff8504b2 100644
--- a/skinStyles/mobile.startup/Overlay.less
+++ b/skinStyles/mobile.startup/Overlay.less
@@ -21,9 +21,6 @@
 
 .overlay-header {
 	height: @overlayHeaderHeight;
-	// FIXME: The header code should be refactored to use flex box,
-	// given we don't need to support IE11 for mobile.
-	display: table;
 
 	.header-chrome & {
 		height: @siteHeaderHeight;