diff --git a/django/contrib/admin/media/css/widgets.css b/django/contrib/admin/media/css/widgets.css
index 8595a26da3..26400fac50 100644
--- a/django/contrib/admin/media/css/widgets.css
+++ b/django/contrib/admin/media/css/widgets.css
@@ -70,6 +70,7 @@
     height: 16px;
     display: block;
     text-indent: -3000px;
+    overflow: hidden;
 }
 
 .selector-add {