diff --git a/wp-includes/js/tinymce/themes/advanced/skins/wp_theme/content.css b/wp-includes/js/tinymce/themes/advanced/skins/wp_theme/content.css
index 7dc3a50863..26a847af60 100644
--- a/wp-includes/js/tinymce/themes/advanced/skins/wp_theme/content.css
+++ b/wp-includes/js/tinymce/themes/advanced/skins/wp_theme/content.css
@@ -1,8 +1,3 @@
-html {
-	-webkit-box-shadow: inset 0 1px 2px rgba(0,0,0,0.07);
-	box-shadow: inset 0 1px 2px rgba(0,0,0,0.07);
-}
-
 body.mceForceColors {background:#FFF; color:#000;}
 body.mceBrowserDefaults {background:transparent; color:inherit; font-size:inherit; font-family:inherit;}
 td {color:#000; font-family:Verdana, Arial, Helvetica, sans-serif; font-size:10px; margin:8px;}