diff --git a/src/pages/_app.tsx b/src/pages/_app.tsx
index 0e6998df..c45d2226 100644
--- a/src/pages/_app.tsx
+++ b/src/pages/_app.tsx
@@ -41,16 +41,16 @@ const MyApp = (({
 	const getLayout = Component.getLayout ?? ((page) => <DefaultLayout children={page}></DefaultLayout>);
 
 	const instance = FrontendVariables.getInstance();
-	instance.BACK_API_PROTOCOL = backApiProtocol;
-	instance.BACK_API_HOST = backApiHost;
-	instance.BACK_API_ROOT_URL = backApiRootUrl;
-	instance.BACK_API_VERSION = backApiVersion;
-	instance.FRONT_APP_HOST = frontAppHost;
-	instance.FRONT_APP_PORT = frontAppPort;
-	instance.IDNOT_AUTHORIZE_ENDPOINT = idNotAuthorizeEndpoint;
-	instance.IDNOT_CLIENT_ID = idNotClientId;
-	instance.FC_AUTHORIZE_ENDPOINT= fcAuthorizeEndpoint;
-	instance.FC_CLIENT_ID = fcClientId
+	instance.BACK_API_PROTOCOL = backApiProtocol ?? "https://";
+	instance.BACK_API_HOST = backApiHost ?? "api.stg.lecoffre.smart-chain.fr";
+	instance.BACK_API_ROOT_URL = backApiRootUrl ?? "/api";
+	instance.BACK_API_VERSION = backApiVersion ?? "/v1";
+	instance.FRONT_APP_HOST = frontAppHost ?? "app.stg.lecoffre.smart-chain.fr";
+	instance.FRONT_APP_PORT = frontAppPort ?? "3000";
+	instance.IDNOT_AUTHORIZE_ENDPOINT = idNotAuthorizeEndpoint ?? "https://qual-connexion.idnot.fr/IdPOAuth2/authorize/idnot_idp_v1";
+	instance.IDNOT_CLIENT_ID = idNotClientId ?? "4501646203F3EF67";
+	instance.FC_AUTHORIZE_ENDPOINT= fcAuthorizeEndpoint ?? "https://fcp.integ01.dev-franceconnect.fr/api/v1/authorize";
+	instance.FC_CLIENT_ID = fcClientId ?? "211286433e39cce01db448d80181bdfd005554b19cd51b3fe7943f6b3b86ab6e";
 
 	return getLayout(<Component {...pageProps} />);
 }) as AppType;