diff --git a/src/request.ts b/src/request.ts
index 986b14d..b56aec1 100644
--- a/src/request.ts
+++ b/src/request.ts
@@ -12,19 +12,17 @@ import * as Utils from "./utils";
 import { computeURI } from "./agents";
 import { HttpieResponseHandler, ModeOfHttpieResponseHandler } from "./class/undiciResponseHandler";
 import { HttpieOnHttpError } from "./class/HttpieOnHttpError";
-import { HttpieError } from "./class/HttpieCommonError";
 import { HttpieDecompressionError, HttpieFetchBodyError, HttpieParserError } from "./class/HttpieHandlerError";
 
 export type WebDavMethod = "MKCOL" | "COPY" | "MOVE" | "LOCK" | "UNLOCK" | "PROPFIND" | "PROPPATCH";
 export type HttpMethod = "GET" | "HEAD" | "POST" | "PUT" | "DELETE" | "CONNECT" | "OPTIONS" | "TRACE" | "PATCH" ;
 export type InlineCallbackAction = <T>(fn: () => Promise<T>) => Promise<T>;
 
-export type RequestError<T> =
-  Partial<HttpieOnHttpError<RequestResponse<T>>> &
-  Partial<HttpieDecompressionError> &
-  Partial<HttpieFetchBodyError> &
-  Partial<HttpieParserError> &
-  HttpieError;
+export type RequestError<T> = 
+  HttpieOnHttpError<RequestResponse<T>> |
+  HttpieDecompressionError |
+  HttpieFetchBodyError |
+  HttpieParserError;
 
 export interface RequestOptions {
   /** @default 0 */
diff --git a/test/request.spec.ts b/test/request.spec.ts
index 2d06a84..2a6f7c3 100644
--- a/test/request.spec.ts
+++ b/test/request.spec.ts
@@ -3,6 +3,7 @@ import { FastifyInstance } from "fastify";
 
 // Import Internal Dependencies
 import { get, post, put, patch, del, safeGet } from "../src/index";
+import { isHTTPError } from "../src/utils";
 
 // Helpers and mock
 import { createServer } from "./server/index";
@@ -177,16 +178,20 @@ describe("http.safeGet", () => {
   });
 
   it("should throw a 404 Not Found error because the path is not known", async() => {
+    expect.assertions(5);
+
     const result = await safeGet<string, any>("/windev/hlkezcjcke");
     expect(result.err).toStrictEqual(true);
 
     if (result.err) {
       const error = result.val;
 
-      expect(error.name).toStrictEqual("HttpieOnHttpError");
-      expect(error.statusCode).toStrictEqual(404);
-      expect(error.statusMessage).toStrictEqual("Not Found");
-      expect(error.data).toMatchSnapshot();
+      if (isHTTPError(error)) {
+        expect(error.name).toStrictEqual("HttpieOnHttpError");
+        expect(error.statusCode).toStrictEqual(404);
+        expect(error.statusMessage).toStrictEqual("Not Found");
+        expect(error.data).toMatchSnapshot();
+      }
     }
   });
 });