diff --git a/src/app/portfolio/[slug]/building-passport/[propertyId]/documents/page.tsx b/src/app/portfolio/[slug]/building-passport/[propertyId]/documents/page.tsx
index e9d61a94..d7698701 100644
--- a/src/app/portfolio/[slug]/building-passport/[propertyId]/documents/page.tsx
+++ b/src/app/portfolio/[slug]/building-passport/[propertyId]/documents/page.tsx
@@ -25,7 +25,7 @@ export default async function DocumentsPage(
         </div>
         <div className="py-4">
           <DocumentsTable 
-            uprn={propertyMeta.uprn}
+            uprn={propertyMeta.uprn.toString()}
           />
         </div>