diff --git a/electrum/lnworker.py b/electrum/lnworker.py
index acca6f7a8..e063ddd0d 100644
--- a/electrum/lnworker.py
+++ b/electrum/lnworker.py
@@ -821,6 +821,7 @@ class LNWallet(LNWorker):
                 'amount_msat': chan.balance(LOCAL, ctn=0),
                 'direction': 'received',
                 'timestamp': tx_height.timestamp,
+                'fee_sat': None,
                 'fee_msat': None,
                 'height': tx_height.height,
                 'confirmations': tx_height.conf,
@@ -839,6 +840,7 @@ class LNWallet(LNWorker):
                 'amount_msat': -chan.balance_minus_outgoing_htlcs(LOCAL),
                 'direction': 'sent',
                 'timestamp': tx_height.timestamp,
+                'fee_sat': None,
                 'fee_msat': None,
                 'height': tx_height.height,
                 'confirmations': tx_height.conf,