diff --git a/packages/next-auth/src/react.tsx b/packages/next-auth/src/react.tsx
index f6405ffe87..62d5ebc0ff 100644
--- a/packages/next-auth/src/react.tsx
+++ b/packages/next-auth/src/react.tsx
@@ -278,7 +278,7 @@ export async function signIn<
     return
   }
 
-  const error = new URL(data.url).searchParams.get("error")
+  const error = new URL(data.url, baseUrl).searchParams.get("error")
 
   if (res.ok) {
     await __NEXTAUTH._getSession({ event: "storage" })