diff --git a/nixos/modules/services/web-apps/gancio.nix b/nixos/modules/services/web-apps/gancio.nix
index c7e10a6e0bf4..aec066112132 100644
--- a/nixos/modules/services/web-apps/gancio.nix
+++ b/nixos/modules/services/web-apps/gancio.nix
@@ -174,7 +174,7 @@ in
         if [[ "$USER" != ${cfg.user} ]]; then
           sudo="exec /run/wrappers/bin/sudo -u ${cfg.user}"
         fi
-        $sudo ${lib.getExe cfg.package} ''${1:--help}
+        $sudo ${lib.getExe cfg.package} "''${@:--help}"
         ' > $out/bin/gancio
         chmod +x $out/bin/gancio
       '')