diff --git a/container/src/hledger-flow/accounts/electrum/electrum-shared.rules b/container/src/hledger-flow/accounts/electrum/electrum-shared.rules
index 1ec4b93..07d4057 100644
--- a/container/src/hledger-flow/accounts/electrum/electrum-shared.rules
+++ b/container/src/hledger-flow/accounts/electrum/electrum-shared.rules
@@ -49,6 +49,7 @@ if %direction ^IN$
 & %label Gift
   account2 income:electrum:%subaccount:gifts:BTC
   comment2 %timestamp,GIFTIN,electrum,BTC,%value_without_fee,USD,%fiat_value,To %subaccount
+# NOTE: fiat_value must be manually updated in custom rules if your given cost-basis will be different
 
 # OUT