diff --git a/skins/default/mail.css b/skins/default/mail.css
index a217b8571..1cd1fe5d5 100644
--- a/skins/default/mail.css
+++ b/skins/default/mail.css
@@ -1474,6 +1474,7 @@ input.from_address
 {
   text-indent: -1000px;
   width: 17px;
+  height: 16px;
   display: block;
   float: left;
   text-decoration: none;