diff --git a/packages/backend/src/server/api/index.ts b/packages/backend/src/server/api/index.ts
index aee1a43f4..189705903 100644
--- a/packages/backend/src/server/api/index.ts
+++ b/packages/backend/src/server/api/index.ts
@@ -39,6 +39,7 @@ app.use(async (ctx, next) => {
 // Init router
 const router = new Router();
 const mastoRouter = new Router();
+const errorRouter = new Router();
 
 // Init multer instance
 const upload = multer({
@@ -60,7 +61,10 @@ router.use(
 	}),
 );
 
-mastoRouter.use(koaBody({ multipart: true }));
+mastoRouter.use(koaBody({ 
+	multipart: true,
+	urlencoded: true
+}));
 
 apiMastodonCompatible(mastoRouter);
 
@@ -148,12 +152,13 @@ router.post("/miauth/:session/check", async (ctx) => {
 });
 
 // Return 404 for unknown API
-router.all("(.*)", async (ctx) => {
+errorRouter.all("(.*)", async (ctx) => {
 	ctx.status = 404;
 });
 
 // Register router
-app.use(router.routes());
 app.use(mastoRouter.routes());
+app.use(router.routes());
+app.use(errorRouter.routes());
 
 export default app;
diff --git a/packages/backend/src/server/index.ts b/packages/backend/src/server/index.ts
index 6235bb232..9cae761ef 100644
--- a/packages/backend/src/server/index.ts
+++ b/packages/backend/src/server/index.ts
@@ -72,7 +72,10 @@ app.use(mount("/proxy", proxyServer));
 const router = new Router();
 const mastoRouter = new Router();
 
-mastoRouter.use(koaBody({ multipart: true }));
+mastoRouter.use(koaBody({ 
+	multipart: true,
+	urlencoded: true
+}));
 
 // Routing
 router.use(activityPub.routes());
@@ -174,8 +177,8 @@ mastoRouter.post("/oauth/token", async (ctx) => {
 });
 
 // Register router
-app.use(router.routes());
 app.use(mastoRouter.routes());
+app.use(router.routes());
 
 app.use(mount(webServer));