diff --git a/mail/templates/default/app.css b/mail/templates/default/app.css
index 82616cc06e..399c770c93 100644
--- a/mail/templates/default/app.css
+++ b/mail/templates/default/app.css
@@ -681,7 +681,6 @@ div.mailDisplayHeaders div.mail_extraEmails.visible {
 }
 
 .mailPreviewHeaders {
-	font-size: 87%;
 	position: relative;
 }