diff --git a/lnbits/core/services.py b/lnbits/core/services.py
index d623b1183..703817fc4 100644
--- a/lnbits/core/services.py
+++ b/lnbits/core/services.py
@@ -154,7 +154,7 @@ async def pay_invoice(
             if payment.checking_id:
                 await create_payment(
                     checking_id=payment.checking_id,
-                    fee=payment.fee_msat,
+                    fee=-abs(payment.fee_msat),
                     preimage=payment.preimage,
                     pending=payment.ok == None,
                     conn=conn,