diff --git a/routes/api/lease/request-approval.ts b/routes/api/lease/request-approval.ts
index e00acb3..70af612 100644
--- a/routes/api/lease/request-approval.ts
+++ b/routes/api/lease/request-approval.ts
@@ -110,7 +110,7 @@ export const handler = define.handlers({
             : property.title || "Property",
           tenant_name: tenant?.name || "Tenant",
           landlord_name: landlord?.name || "Landlord",
-          monthly_rent: property.monthly_rent,
+          monthly_rent: property.monthly_rent ?? undefined,
         });
       }
         await sendLeaseApprovalRequest(invite.landlord_id, {