diff --git a/nix/searxng.nix b/nix/searxng.nix
index 63878741..bb4db71c 100644
--- a/nix/searxng.nix
+++ b/nix/searxng.nix
@@ -20,6 +20,12 @@ in
       type = types.port;
     };
 
+    use_default_settings = lib.mkOption {
+      description = "Use default Searxng settings";
+      default = true;
+      type = types.bool;
+    };
+
     settings = lib.mkOption {
       type = yamlFormat.type;
       default = {
@@ -47,9 +53,9 @@ in
             environment = {
               SEARXNG_SETTINGS_PATH = "${yamlFormat.generate "settings.yaml" (
                 lib.recursiveUpdate config.settings {
-                  use_default_settings = true;
                   server.bind_address = config.host;
                   server.port = config.port;
+                  use_default_settings = config.use_default_settings;
                 }
               )}";
             };
diff --git a/nix/searxng_test.nix b/nix/searxng_test.nix
index d73c920b..0c523102 100644
--- a/nix/searxng_test.nix
+++ b/nix/searxng_test.nix
@@ -1,6 +1,14 @@
 { pkgs, ... }:
 {
-  services.searxng."searxng1".enable = true;
+  services.searxng."searxng1" = {
+    enable = true;
+    use_default_settings = false;
+    settings = {
+      server.secret_key = "secret";
+      doi_resolvers."dummy" = "http://example.org";
+      default_doi_resolver = "dummy";
+    };
+  };
 
   settings.processes.test = {
     command = pkgs.writeShellApplication {