diff --git a/src/MMKV.ts b/src/MMKV.ts
index 973a5e74..e8b81fa2 100644
--- a/src/MMKV.ts
+++ b/src/MMKV.ts
@@ -1,6 +1,4 @@
 import { createMMKV } from './createMMKV';
-import { createMockMMKV } from './createMMKV.mock';
-import { isJest } from './PlatformChecker';
 
 interface Listener {
   remove: () => void;
@@ -29,8 +27,8 @@ export interface MMKVConfiguration {
    * ```ts
    * const temporaryStorage = new MMKV({ path: '/tmp/' })
    * ```
-   * 
-   * _Notice_: On iOS you can set the AppGroup bundle property to share the same storage between your app and its extensions. 
+   *
+   * _Notice_: On iOS you can set the AppGroup bundle property to share the same storage between your app and its extensions.
    * In this case `path` property will be ignored.
    * See more on MMKV configuration [here](https://github.com/Tencent/MMKV/wiki/iOS_tutorial#configuration).
    */
@@ -147,9 +145,7 @@ export class MMKV implements MMKVInterface {
    */
   constructor(configuration: MMKVConfiguration = { id: 'mmkv.default' }) {
     this.id = configuration.id;
-    this.nativeInstance = isJest()
-      ? createMockMMKV()
-      : createMMKV(configuration);
+    this.nativeInstance = createMMKV(configuration);
     this.functionCache = {};
   }
 
diff --git a/src/PlatformChecker.ts b/src/PlatformChecker.ts
deleted file mode 100644
index 94d4d686..00000000
--- a/src/PlatformChecker.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-export function isJest(): boolean {
-  if (global.process == null) {
-    // In a WebBrowser/Electron the `process` variable does not exist
-    return false;
-  }
-  return process.env.JEST_WORKER_ID != null;
-}
diff --git a/src/createMMKV.mock.ts b/src/createMMKV.mock.ts
index c81bb571..223598b8 100644
--- a/src/createMMKV.mock.ts
+++ b/src/createMMKV.mock.ts
@@ -1,7 +1,8 @@
 import type { NativeMMKV } from 'react-native-mmkv';
+import { MMKVConfiguration } from 'react-native-mmkv';
 
 /* Mock MMKV instance for use in tests */
-export const createMockMMKV = (): NativeMMKV => {
+export const createMMKV = (_: MMKVConfiguration): NativeMMKV => {
   const storage = new Map<string, string | boolean | number | Uint8Array>();
 
   return {
diff --git a/test/hooks.test.tsx b/test/hooks.test.tsx
index e24abd16..25bb7be5 100644
--- a/test/hooks.test.tsx
+++ b/test/hooks.test.tsx
@@ -9,6 +9,8 @@ import {
 } from '@testing-library/react-native';
 import { MMKV, useMMKVNumber, useMMKVString } from '../src';
 
+jest.mock('../src/createMMKV', () => require('../src/createMMKV.mock.ts'));
+
 const mmkv = new MMKV();
 
 beforeEach(() => {