diff --git a/src/wp-includes/js/tinymce/skins/wordpress/wp-content.css b/src/wp-includes/js/tinymce/skins/wordpress/wp-content.css
index 0026e1415f..04c6d54363 100644
--- a/src/wp-includes/js/tinymce/skins/wordpress/wp-content.css
+++ b/src/wp-includes/js/tinymce/skins/wordpress/wp-content.css
@@ -80,6 +80,8 @@ td {
 .mce-content-body img.mce-wp-nextpage,
 .mce-content-body img.mce-wp-more {
 	border: 0;
+	-webkit-box-shadow: none;
+	box-shadow: none;
 	width: 95%;
 	height: 10px;
 	display: block;