diff --git a/addons/mail/static/src/css/mail_group.css b/addons/mail/static/src/css/mail_group.css
index 8f4ca61d531..b700cb8c80f 100644
--- a/addons/mail/static/src/css/mail_group.css
+++ b/addons/mail/static/src/css/mail_group.css
@@ -12,7 +12,6 @@
   min-height: 0px;
   max-height: none;
   padding: 0px 18px;
-  max-width: 80%;
 }
 
 /* Resize footer width */