diff --git a/server/tests/routes/auth.test.js b/server/tests/routes/auth.test.js
index c95a288..814711b 100644
--- a/server/tests/routes/auth.test.js
+++ b/server/tests/routes/auth.test.js
@@ -179,8 +179,8 @@ describe('Auth Routes', () => {
           username: 'newuser',
           email: 'new@example.com',
           password: 'password123',
-          firstName: 'New',
-          lastName: 'User'
+          first_name: 'New',
+          last_name: 'User'
         });
 
       expect(response.status).to.equal(201);