diff --git a/module.nix b/module.nix
index 9fd319a..b11e5c7 100644
--- a/module.nix
+++ b/module.nix
@@ -3,7 +3,7 @@ with lib;
 let
   cfg = config.services.danilafe-blog;
   sslForDomain = domain: (cfg.ssl == true) || (cfg.ssl."${domain}" or false);
-  anySsl = any (mapAttrsToList (domain: pkg: sslForDomain domain) cfg.domains);
+  anySsl = any sslForDomain (attrNames cfg.domains);
   virtualHost = domain: package:
     {
       virtualHosts."${domain}" = mkMerge [
@@ -38,6 +38,7 @@ in
       };
       domains = mkOption {
         type = types.attrsOf types.package;
+        default = {};
         description = "Attribute set where keys are domains and values are packages to host there.";
       };
       challengePath = mkOption {