diff --git a/addons/mail/static/src/css/mail.css b/addons/mail/static/src/css/mail.css
index 8d461af8586..75a64b99096 100644
--- a/addons/mail/static/src/css/mail.css
+++ b/addons/mail/static/src/css/mail.css
@@ -86,6 +86,9 @@
 .openerp .oe_mail .oe_msg .oe_msg_content .oe_msg_body pre {
     white-space: pre-wrap;
 }
+.openerp .oe_mail .oe_msg .oe_msg_content .oe_msg_body blockquote {
+    font-size: 1em;
+}
 .openerp .oe_mail .oe_msg .oe_msg_content .oe_msg_body * {
     text-overflow:ellipsis;
     word-wrap: break-word;