diff --git a/lnbits/wallets/lndrest.py b/lnbits/wallets/lndrest.py
index c3aedd396..f327cdfd0 100644
--- a/lnbits/wallets/lndrest.py
+++ b/lnbits/wallets/lndrest.py
@@ -266,7 +266,12 @@ class LndRestWallet(Wallet):
                     if payment is not None and payment.get("status"):
                         return PaymentStatus(
                             paid=statuses[payment["status"]],
-                            fee_msat=payment.get("fee_msat"),
+                            # API returns fee_msat as string, explicitly convert to int
+                            fee_msat=(
+                                int(payment["fee_msat"])
+                                if payment.get("fee_msat")
+                                else None
+                            ),
                             preimage=payment.get("payment_preimage"),
                         )
                     else: