diff --git a/module.nix b/module.nix
index 1653de4..0f9262a 100644
--- a/module.nix
+++ b/module.nix
@@ -1,13 +1,13 @@
 { config, pkgs, lib, ... }:
 
 let
-  cfg = config.services.sflow_exporter;
+  cfg = config.services.sflow-exporter;
 in
 {
   options.services.sflow-exporter = {
     package = lib.mkOption {
       type = lib.types.package;
-      default = pkgs.sflow_exporter;
+      default = pkgs.sflow-exporter;
       defaultText = lib.literalExpression "pkgs.sflow-exporter";
       description = lib.mdDoc "Which sflow_exporzer derivation to use.";
     };
@@ -46,7 +46,6 @@ in
 
   config = lib.mkIf cfg.enable {
     environment.systemPackages = [ cfg.package ];
-    networking.firewall.allowedTCPPorts = lib.mkIf cfg.openFirewall [ cfg.listen.sflow.port ];
 
     systemd.services.sflow-exporter = {
       description = "sflow_exporter";
diff --git a/result b/result
new file mode 120000
index 0000000..69b390d
--- /dev/null
+++ b/result
@@ -0,0 +1 @@
+/nix/store/fjv1kicz1cp165f9vd55wdg0gajwxlvp-sflow_exporter-0.1.0
\ No newline at end of file