diff --git a/src/adapter.ts b/src/adapter.ts
index 106472a..f3923f3 100644
--- a/src/adapter.ts
+++ b/src/adapter.ts
@@ -61,12 +61,12 @@ export const adapter = async (opts: AdapterOpts = {}, overloadOpts?: RequestInit
     url = new URL(opts.url);
   } else {
     origin = window?.location?.origin || 'http://localhost:51515';
-    url = new URL(opts.url, origin);
+    url = new URL(opts?.url || '', origin);
   }
   const isGet = method === 'GET';
   const oldSearchParams = url.searchParams;
   if (isGet) {
-    let searchParams = new URLSearchParams({ ...Object.fromEntries(oldSearchParams), ...opts.body } as SimpleObject);
+    let searchParams = new URLSearchParams({ ...Object.fromEntries(oldSearchParams), ...opts?.params, ...opts?.body } as SimpleObject);
     url.search = searchParams.toString();
   } else {
     const params = {