diff --git a/css/dataTables.bootstrap4.scss b/css/dataTables.bootstrap4.scss
index 57a67e468..5383da136 100644
--- a/css/dataTables.bootstrap4.scss
+++ b/css/dataTables.bootstrap4.scss
@@ -156,6 +156,9 @@ div.dataTables_scrollBody {
 		margin-bottom: 0 !important;
 
 		thead { // Hide sort icons
+			.sorting:before,
+			.sorting_asc:before,
+			.sorting_desc:before,
 			.sorting:after,
 			.sorting_asc:after,
 			.sorting_desc:after {