diff --git a/nix/module.nix b/nix/module.nix
index b48ec67..0caeb1b 100644
--- a/nix/module.nix
+++ b/nix/module.nix
@@ -21,19 +21,8 @@ in {
     };
 
     settings = mkOption {
-      type = with types; let
-        valueType = nullOr (oneOf [
-          # TODO: restrict type to actual config file structure
-          bool
-          int
-          float
-          str
-          path
-          (attrsOf valueType)
-          (listOf valueType)
-        ]);
-      in
-        valueType;
+      type = with types; attrsOf (either str int);
+
       default = {
         logFile = throw "Please specify outage-detector.settings.";
         host = "1.1.1.1";
@@ -47,7 +36,7 @@ in {
 
     systemd.services.outage-detector = mkIf (cfg.timer
       != null) {
-      script = "${package}/bin/outage_detector log ${cfg.settings.logFile} --host ${cfg.settings.host} --timeout ${cfg.settings.timeout}";
+      script = "${package}/bin/outage_detector log ${cfg.settings.logFile} --host ${cfg.settings.host} --timeout ${toString cfg.settings.timeout}";
 
       serviceConfig = {
         Type = "oneshot";