diff --git a/core/css/jquery-ui-fixes.scss b/core/css/jquery-ui-fixes.scss
index 9dc75fc327450fbd9d93b486bedea6fc0433d16e..0500e1b08c83c3a0acb38c99b1b53d7ff740a779 100644
--- a/core/css/jquery-ui-fixes.scss
+++ b/core/css/jquery-ui-fixes.scss
@@ -11,6 +11,7 @@
 .ui-widget-header {
 	border: none;
 	color: $color-main-text;
+	background-image: none;
 }
 .ui-widget-header a {
 	color: $color-main-text;