diff --git a/packages/backend/src/util/phone/phoneUtils.service.spec.ts b/packages/backend/src/util/phone/phoneUtils.service.spec.ts
index 82ca7be54f..9809c464cb 100644
--- a/packages/backend/src/util/phone/phoneUtils.service.spec.ts
+++ b/packages/backend/src/util/phone/phoneUtils.service.spec.ts
@@ -15,7 +15,7 @@ describe("Telephone utils", () => {
 
   it("getPhoneString shoud return string with countryCode and numero", () => {
     expect(getPhoneString({ countryCode: "fr", numero: "0622062206" })).toEqual(
-      "0622062206"
+      "06 22 06 22 06"
     );
   });
 });
diff --git a/packages/backend/src/util/test/AppTestHelper.service.ts b/packages/backend/src/util/test/AppTestHelper.service.ts
index 6e6e3c78cd..7fff666d66 100644
--- a/packages/backend/src/util/test/AppTestHelper.service.ts
+++ b/packages/backend/src/util/test/AppTestHelper.service.ts
@@ -94,6 +94,11 @@ async function bootstrapTestApp(
     context.app.useGlobalPipes(
       new ValidationPipe({
         whitelist: true,
+        stopAtFirstError: true,
+        transform: true,
+        transformOptions: {
+          enableImplicitConversion: false,
+        },
       })
     );
     await context.app.init();