diff --git a/src/routes/personal-contact.routes.js b/src/routes/personal-contact.routes.js
index 539fe47..1a27f55 100644
--- a/src/routes/personal-contact.routes.js
+++ b/src/routes/personal-contact.routes.js
@@ -8,10 +8,10 @@ const router = express.Router()
 
 const createContactSchema = z.object({
   firstName: z.string().min(1, 'Meno je povinné'),
-  lastName: z.string().optional(),
+  lastName: z.union([z.string(), z.literal(''), z.null()]).optional(),
   phone: z.union([z.string(), z.literal(''), z.null()]).optional(),
   email: z.string().email('Neplatný email'),
-  secondaryEmail: z.union([z.string().email('Neplatný email'), z.literal('')]).optional(),
+  secondaryEmail: z.union([z.string().email('Neplatný email'), z.literal(''), z.null()]).optional(),
   companyId: z.union([z.string().uuid(), z.literal(''), z.null()]).optional(),
   description: z.union([z.string().max(1000), z.literal(''), z.null()]).optional(),
 })