diff --git a/src/modules/market/types/market.ts b/src/modules/market/types/market.ts
index 7a3b8ca..ef88fad 100644
--- a/src/modules/market/types/market.ts
+++ b/src/modules/market/types/market.ts
@@ -129,6 +129,7 @@ export interface Order {
   originalOrderId?: string
   lightningInvoice?: any
   paymentHash?: string
+  feeMsat?: number  // Routing fee paid on the Lightning payment, in millisats
   paidAt?: number
   paymentStatus?: 'pending' | 'paid' | 'expired'
   paid?: boolean  // Direct boolean field matching nostrmarket reference