diff --git a/addons/mail/static/src/less/mail_activity.less b/addons/mail/static/src/less/mail_activity.less
index 0781d24b82a..395d4cf6ba5 100644
--- a/addons/mail/static/src/less/mail_activity.less
+++ b/addons/mail/static/src/less/mail_activity.less
@@ -50,6 +50,7 @@
         .o_activity_btn {
             span.fa {
                 vertical-align: -35%;
+                overflow: visible;
             }
         }