diff --git a/src/middleware/with-response-object-check.ts b/src/middleware/with-response-object-check.ts
index 9f8cae0..89d9e03 100644
--- a/src/middleware/with-response-object-check.ts
+++ b/src/middleware/with-response-object-check.ts
@@ -9,8 +9,10 @@ export const withResponseObjectCheck: Middleware<
   const rawResponse = await next(req, ctx)
 
   if (typeof rawResponse === "object" && !(rawResponse instanceof Response)) {
+    const method = req.method?.toUpperCase() ?? "UNKNOWN"
+    const path = new URL(req.url).pathname
     throw new Error(
-      "Use ctx.json({...}) instead of returning an object directly."
+      `Route ${method} ${path} returned a plain object. Use ctx.json({...}) instead of returning an object directly.`
     )
   }
 
diff --git a/tests/errors/do-not-allow-raw-json.test.ts b/tests/errors/do-not-allow-raw-json.test.ts
index 8682796..c27b832 100644
--- a/tests/errors/do-not-allow-raw-json.test.ts
+++ b/tests/errors/do-not-allow-raw-json.test.ts
@@ -31,6 +31,7 @@ test("should throw an error when responding with raw JSON", async (t) => {
   const { data } = await axios.get("/", {
     validateStatus: () => true,
   })
+  t.true(data.error.includes("Route GET /"))
   t.true(
     data.error.includes(
       "Use ctx.json({...}) instead of returning an object directly"