diff --git a/nixos/modules/services/mail/dovecot.nix b/nixos/modules/services/mail/dovecot.nix
index 223f3bef77db..c39827c5b867 100644
--- a/nixos/modules/services/mail/dovecot.nix
+++ b/nixos/modules/services/mail/dovecot.nix
@@ -103,11 +103,12 @@ let
 
         plugin {
           quota_rule = *:storage=${cfg.quotaGlobalPerUser}
-          quota = maildir:User quota # per virtual mail user quota # BUG/FIXME broken, we couldn't get this working
+          quota = count:User quota # per virtual mail user quota
           quota_status_success = DUNNO
           quota_status_nouser = DUNNO
           quota_status_overquota = "552 5.2.2 Mailbox is full"
           quota_grace = 10%%
+          quota_vsizes = yes
         }
       ''
     )