diff --git a/mail-server/dovecot.nix b/mail-server/dovecot.nix
index 307f0f4..148c97d 100644
--- a/mail-server/dovecot.nix
+++ b/mail-server/dovecot.nix
@@ -445,7 +445,7 @@ in
           userdb {
             driver = ldap
             args = ${ldapConfFile}
-            default_fields = \
+            override_fields = \
               uid=${toString cfg.vmailUID} \
               gid=${toString cfg.vmailUID}
           }