diff --git a/http-server/errors.js b/http-server/errors.js
index 0627431..5fc92b0 100644
--- a/http-server/errors.js
+++ b/http-server/errors.js
@@ -61,3 +61,16 @@ export class ServiceUnavailableError extends HttpError {
     });
   }
 }
+
+export class EntityTooLargeError extends HttpError {
+  /**
+   * @param {string} [message]
+   */
+  constructor(message) {
+    super({
+      name: "ERR_ENTITY_TOO_LARGE",
+      message: message || "Entity too large",
+      statusCode: 413
+    });
+  }
+}
diff --git a/http-server/route.js b/http-server/route.js
index 5c959f2..7c43d44 100644
--- a/http-server/route.js
+++ b/http-server/route.js
@@ -15,6 +15,7 @@ export function createRouter() {
   return {
     async handle(ctx) {
       const { req, res } = ctx;
+      const headers = req.req.headers;
 
       try {
         for (const route of routes) {
@@ -28,11 +29,11 @@ export function createRouter() {
 
           ctx.params = patternResult.pathname.groups;
 
-          if (req.req.headers["content-type"]?.includes("application/json")) {
+          if (headers["content-type"]?.includes("application/json")) {
             ctx.data = await ctx.req.parseJson();
           }
 
-          if (req.req.headers["content-type"]?.includes("multipart/form-data")) {
+          if (headers["content-type"]?.includes("multipart/form-data")) {
             if (!route.options.incomingForm) {
               throw new BadRequestError("Request cannot be processed without defined incoming form.");
             }