diff --git a/dovecot.nix b/dovecot.nix
index 6984049..d9c2e3d 100644
--- a/dovecot.nix
+++ b/dovecot.nix
@@ -195,7 +195,7 @@ in {
           group = cfg.mail-group;
         };
         "${cfg.metrics.user}" = {
-          isySstemUser = true;
+          isSystemUser = true;
           group = cfg.metrics.group;
         };
       };