diff --git a/superset/assets/visualizations/filter_box.css b/superset/assets/visualizations/filter_box.css
index cb5625c80f8b2..af2c3071b4fa9 100644
--- a/superset/assets/visualizations/filter_box.css
+++ b/superset/assets/visualizations/filter_box.css
@@ -20,7 +20,7 @@ ul.select2-results div.filter_box{
     border-width: 1px;
     border-color: transparent;
 }
-.filter_box .slice_container {
+.filter_box.slice_container {
     padding: 10px;
     overflow: visible !important;
 }