diff --git a/package.json b/package.json
index ffecf14..d3e0889 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@brainylab/fetch-wrapper",
-	"version": "0.5.3",
+	"version": "0.5.4",
 	"keywords": [
 		"fetch",
 		"wrapper",
diff --git a/src/utils/object-to-url-params.spec.ts b/src/utils/object-to-url-params.spec.ts
index b7b4a97..09e8f48 100644
--- a/src/utils/object-to-url-params.spec.ts
+++ b/src/utils/object-to-url-params.spec.ts
@@ -1,17 +1,26 @@
-import { test } from 'vitest';
+import { describe, it, expect } from 'vitest';
 
 import { objectToUrlParams } from './object-to-url-params';
 
-test('object-to-url-params', () => {
-	const obj = { a: '1', b: '2', c: '3' };
-	const result = objectToUrlParams(obj);
+describe('object-to-url-params', () => {
+	it('should be convert object to url params', () => {
+		const obj = { a: '1', b: '2', c: '3' };
+		const result = objectToUrlParams(obj);
 
-	expect(result).toBe('a=1&b=2&c=3');
-});
+		expect(result).toBe('a=1&b=2&c=3');
+	});
+
+	it('should be clear undefined or null object', () => {
+		const obj = { a: undefined, b: null, c: '3' };
+		const result = objectToUrlParams(obj);
+
+		expect(result).toBe('c=3');
+	});
 
-test('array-to-url-params', () => {
-	const obj = { d: [1, 2, 3, 4] };
-	const result = objectToUrlParams(obj);
+	it('should be convert array to url params', () => {
+		const obj = { d: [1, 2, 3, 4] };
+		const result = objectToUrlParams(obj);
 
-	expect(result).toBe('d=1&d=2&d=3&d=4');
+		expect(result).toBe('d=1&d=2&d=3&d=4');
+	});
 });
diff --git a/src/utils/object-to-url-params.ts b/src/utils/object-to-url-params.ts
index 1576caa..c2c6f8e 100644
--- a/src/utils/object-to-url-params.ts
+++ b/src/utils/object-to-url-params.ts
@@ -1,7 +1,10 @@
-function cleanObject(
-	obj: Record<string, string | number | string[] | number[] | undefined | null>,
-): Record<string, string | number | string[] | number[]> {
-	const cleanedObj: Record<string, string | number | string[] | number[]> = {};
+type ObjectToUrl = Record<
+	string,
+	string | number | string[] | number[] | undefined | null
+>;
+
+function cleanObject(obj: ObjectToUrl): ObjectToUrl {
+	const cleanedObj: ObjectToUrl = {};
 	Object.keys(obj).forEach((key) => {
 		const value = obj[key];
 		if (value !== undefined && value !== null) {
@@ -12,9 +15,7 @@ function cleanObject(
 	return cleanedObj;
 }
 
-export function objectToUrlParams(
-	obj: Record<string, string | number | string[] | number[]>,
-): string {
+export function objectToUrlParams(obj: ObjectToUrl): string {
 	const cleanedObj = cleanObject(obj);
 	const params = new URLSearchParams();