diff --git a/nixos/modules/services/x11/xautolock.nix b/nixos/modules/services/x11/xautolock.nix
index 3e03131ca11..5ce08fce7c4 100644
--- a/nixos/modules/services/x11/xautolock.nix
+++ b/nixos/modules/services/x11/xautolock.nix
@@ -66,7 +66,7 @@ in
 
         killer = mkOption {
           default = null; # default according to `man xautolock` is none
-          example = "${pkgs.systemd}/bin/systemctl suspend";
+          example = "/run/current-system/systemd/bin/systemctl suspend";
           type = types.nullOr types.str;
 
           description = ''