diff --git a/src/frontend/apps/impress/.env.development b/src/frontend/apps/impress/.env.development
index 06cbc57c..2056c636 100644
--- a/src/frontend/apps/impress/.env.development
+++ b/src/frontend/apps/impress/.env.development
@@ -1,2 +1,3 @@
 NEXT_PUBLIC_API_ORIGIN=http://localhost:8071
 NEXT_PUBLIC_SIGNALING_URL=ws://localhost:4444
+NEXT_PUBLIC_SW_DEACTIVATED=true
diff --git a/src/frontend/apps/impress/next.config.js b/src/frontend/apps/impress/next.config.js
index 41115e4c..e59b6237 100644
--- a/src/frontend/apps/impress/next.config.js
+++ b/src/frontend/apps/impress/next.config.js
@@ -11,7 +11,7 @@ const nextConfig = {
     // Enables the styled-components SWC transform
     styledComponents: true,
   },
-  webpack(config, { isServer, dev }) {
+  webpack(config, { isServer }) {
     // Grab the existing rule that handles SVG imports
     const fileLoaderRule = config.module.rules.find((rule) =>
       rule.test?.test?.('.svg'),
@@ -33,7 +33,7 @@ const nextConfig = {
       },
     );
 
-    if (!isServer && !dev) {
+    if (!isServer && process.env.NEXT_PUBLIC_SW_DEACTIVATED !== 'true') {
       config.plugins.push(
         new InjectManifest({
           swSrc: './src/core/service-worker.ts',
diff --git a/src/frontend/apps/impress/package.json b/src/frontend/apps/impress/package.json
index fcc20ca6..e8842507 100644
--- a/src/frontend/apps/impress/package.json
+++ b/src/frontend/apps/impress/package.json
@@ -5,7 +5,7 @@
   "scripts": {
     "dev": "next dev",
     "build": "prettier --check . && yarn stylelint && next build",
-    "build:ci": "cp .env.development .env.local && cross-env NEXT_PUBLIC_CI=true yarn build",
+    "build:ci": "cp .env.development .env.local && yarn build",
     "build-theme": "cunningham -g css,ts -o src/cunningham --utility-classes",
     "start": "npx -y serve@latest out",
     "lint": "tsc --noEmit && next lint",
@@ -21,7 +21,6 @@
     "@gouvfr-lasuite/integration": "1.0.1",
     "@openfun/cunningham-react": "2.9.3",
     "@tanstack/react-query": "5.48.0",
-    "cross-env": "*",
     "i18next": "23.11.5",
     "lodash": "4.17.21",
     "luxon": "3.4.4",
@@ -49,6 +48,7 @@
     "@types/node": "*",
     "@types/react": "18.3.3",
     "@types/react-dom": "*",
+    "cross-env": "*",
     "dotenv": "16.4.5",
     "eslint-config-impress": "*",
     "fetch-mock": "9.11.0",
diff --git a/src/frontend/apps/impress/src/core/service-worker/__tests__/_app.test.tsx b/src/frontend/apps/impress/src/core/service-worker/__tests__/_app.test.tsx
new file mode 100644
index 00000000..3e83e24e
--- /dev/null
+++ b/src/frontend/apps/impress/src/core/service-worker/__tests__/_app.test.tsx
@@ -0,0 +1,71 @@
+import '@testing-library/jest-dom';
+import { render } from '@testing-library/react';
+import { Router } from 'next/router';
+import { PropsWithChildren, ReactElement } from 'react';
+
+import App from '@/pages/_app';
+import { AppWrapper } from '@/tests/utils';
+import { NextPageWithLayout } from '@/types/next';
+
+const Page: NextPageWithLayout = () => {
+  return <div>Test Page</div>;
+};
+
+Page.getLayout = function getLayout(page: ReactElement) {
+  return <div>{page}</div>;
+};
+
+jest.mock('@/core/', () => ({
+  ...jest.requireActual('@/core/'),
+  AppProvider: ({ children }: PropsWithChildren) => <div>{children}</div>,
+}));
+
+describe('App', () => {
+  it('checks service-worker is register', () => {
+    jest.spyOn(console, 'error').mockImplementation(() => {});
+
+    const registerSpy = jest.fn();
+    registerSpy.mockImplementation(
+      () =>
+        new Promise((reject) => {
+          reject('error');
+        }),
+    );
+    Object.defineProperty(navigator, 'serviceWorker', {
+      value: {
+        register: registerSpy,
+      },
+      writable: true,
+    });
+
+    render(<App Component={Page} router={{} as Router} pageProps={{}} />, {
+      wrapper: AppWrapper,
+    });
+
+    expect(registerSpy).toHaveBeenCalledWith('/service-worker.js');
+  });
+
+  it('checks service-worker is not register', () => {
+    process.env.NEXT_PUBLIC_SW_DEACTIVATED = 'true';
+
+    const registerSpy = jest.fn();
+    registerSpy.mockImplementation(
+      () =>
+        new Promise((reject) => {
+          reject('error');
+        }),
+    );
+    Object.defineProperty(navigator, 'serviceWorker', {
+      value: {
+        register: registerSpy,
+      },
+      writable: true,
+    });
+
+    render(<App Component={Page} router={{} as Router} pageProps={{}} />, {
+      wrapper: AppWrapper,
+    });
+
+    expect(registerSpy).not.toHaveBeenCalledWith('/service-worker.js');
+  });
+});
diff --git a/src/frontend/apps/impress/src/custom-next.d.ts b/src/frontend/apps/impress/src/custom-next.d.ts
index c457a17f..4f84b79c 100644
--- a/src/frontend/apps/impress/src/custom-next.d.ts
+++ b/src/frontend/apps/impress/src/custom-next.d.ts
@@ -21,5 +21,6 @@ namespace NodeJS {
   interface ProcessEnv {
     NEXT_PUBLIC_API_ORIGIN?: string;
     NEXT_PUBLIC_SIGNALING_URL?: string;
+    NEXT_PUBLIC_SW_DEACTIVATED?: string;
   }
 }
diff --git a/src/frontend/apps/impress/src/pages/_app.tsx b/src/frontend/apps/impress/src/pages/_app.tsx
index 1123b655..85e87ee0 100644
--- a/src/frontend/apps/impress/src/pages/_app.tsx
+++ b/src/frontend/apps/impress/src/pages/_app.tsx
@@ -17,7 +17,10 @@ export default function App({ Component, pageProps }: AppPropsWithLayout) {
   const { t } = useTranslation();
 
   useEffect(() => {
-    if ('serviceWorker' in navigator && process.env.NEXT_PUBLIC_CI !== 'true') {
+    if (
+      'serviceWorker' in navigator &&
+      process.env.NEXT_PUBLIC_SW_DEACTIVATED !== 'true'
+    ) {
       navigator.serviceWorker.register('/service-worker.js').catch((err) => {
         console.error('Service worker registration failed:', err);
       });