diff --git a/addons/mail/static/src/scss/followers.scss b/addons/mail/static/src/scss/followers.scss
index b2bbc77f7f2..934df9b7acc 100644
--- a/addons/mail/static/src/scss/followers.scss
+++ b/addons/mail/static/src/scss/followers.scss
@@ -84,6 +84,8 @@
 
         .o_followers_list {
             font-size: small;
+            max-height: 50vh; // ancestor has size 33px
+            overflow: auto;
 
             .o_partner {
                 position: relative; // required for old design compatibility