diff --git a/lib/testing/src/lib/core/actions/identity/identity.service.ts b/lib/testing/src/lib/core/actions/identity/identity.service.ts
index 5d7156fa22..e42a46e4a7 100644
--- a/lib/testing/src/lib/core/actions/identity/identity.service.ts
+++ b/lib/testing/src/lib/core/actions/identity/identity.service.ts
@@ -65,7 +65,7 @@ export class IdentityService {
         const queryParams = {}, postBody = {
             'username': user.email,
             'firstName': user.firstName,
-            'lastName': user.lastName + 'LastName',
+            'lastName': user.lastName,
             'enabled': true,
             'email': user.email
         };