diff --git a/src/components/pages/purchase/form/request/PurchaseRequestForm.tsx b/src/components/pages/purchase/form/request/PurchaseRequestForm.tsx
index 6fdbc78f..41732013 100644
--- a/src/components/pages/purchase/form/request/PurchaseRequestForm.tsx
+++ b/src/components/pages/purchase/form/request/PurchaseRequestForm.tsx
@@ -214,7 +214,9 @@ const PurchaseRequestForm = ({
 
   // ===== API DATA FETCHING =====
   const { data: supplierData, isLoading: isLoadingProducts } = useSWR(
-    formik.values.supplier_id?.toString(),
+    formik.values.supplier_id && Number(formik.values.supplier_id) > 0
+      ? formik.values.supplier_id?.toString()
+      : null,
     (id: string) => SupplierApi.getSingle(Number(id))
   );