diff --git a/core/modules/views_ui/css/views_ui.admin.theme.css b/core/modules/views_ui/css/views_ui.admin.theme.css
index 1a4672c..284d850 100644
--- a/core/modules/views_ui/css/views_ui.admin.theme.css
+++ b/core/modules/views_ui/css/views_ui.admin.theme.css
@@ -1150,6 +1150,7 @@ div.messages {
   background: none;
   border: medium;
   font-family: inherit;
+  font-size: 12px;
   padding-left: 12px;
   margin-bottom: 0;
 }