diff --git src/bp-templates/bp-legacy/css/twentyseventeen.css src/bp-templates/bp-legacy/css/twentyseventeen.css
index edad066a9..9b4b50a10 100644
--- src/bp-templates/bp-legacy/css/twentyseventeen.css
+++ src/bp-templates/bp-legacy/css/twentyseventeen.css
@@ -232,6 +232,10 @@ body.colors-dark.group-members #buddypress #subnav .groups-members-search form {
 	margin-top: 0;
 }
 
+body.colors-dark #page #buddypress #members-order-by option {
+	background-color: #333;
+}
+
 .directory.colors-dark #buddypress #subnav.item-list-tabs ul {
 	border-bottom: 0;
 	border-top: 0;