diff --git a/src/pages/invoice/ProformaInvoice.tsx b/src/pages/invoice/ProformaInvoice.tsx
index 154b707..a91e538 100644
--- a/src/pages/invoice/ProformaInvoice.tsx
+++ b/src/pages/invoice/ProformaInvoice.tsx
@@ -12,8 +12,15 @@ import type { FilterValues } from '@/components/Filters'
 import { useGetInvoice } from './hooks/useInvoiceData'
 import type { InvoiceType } from './types/Types'
 
+const INVOICE_TABS: ProformaInvoiceStatusEnum[] = [
+    ProformaInvoiceStatusEnum.ALL,
+    ProformaInvoiceStatusEnum.NOT_CONFIRMED,
+    ProformaInvoiceStatusEnum.PARTIALLY_CONFIRMED,
+    ProformaInvoiceStatusEnum.CONFIRMED,
+]
+
 const isValidInvoiceTab = (value: string | null): value is ProformaInvoiceStatusEnum =>
-    Object.values(ProformaInvoiceStatusEnum).includes(value as ProformaInvoiceStatusEnum)
+    value !== null && INVOICE_TABS.includes(value as ProformaInvoiceStatusEnum)
 
 const ProformaInvoice: FC = () => {
     const [searchParams, setSearchParams] = useSearchParams()