diff --git a/public/theme/css/default.css b/public/theme/css/default.css
index c5cfcd4..7b93e38 100644
--- a/public/theme/css/default.css
+++ b/public/theme/css/default.css
@@ -161,3 +161,8 @@ div.img-preview {
   display: inline-block;
   vertical-align: top;
 }
+
+span.filebin.error {
+  font-size: 14pt;
+  color: red;
+}