diff --git a/hwilib/devices/ledger_bitcoin/btchip/btchipHelpers.py b/hwilib/devices/ledger_bitcoin/btchip/btchipHelpers.py
index ba5b66c5f..bb74cd56b 100644
--- a/hwilib/devices/ledger_bitcoin/btchip/btchipHelpers.py
+++ b/hwilib/devices/ledger_bitcoin/btchip/btchipHelpers.py
@@ -21,8 +21,8 @@
 import re
 
 # from pycoin
-SATOSHI_PER_COIN = decimal.Decimal(1e8)
-COIN_PER_SATOSHI = decimal.Decimal(1)/SATOSHI_PER_COIN
+SATOSHI_PER_COIN = decimal.Decimal(100_000_000)
+COIN_PER_SATOSHI = decimal.Decimal('0.00000001')
 
 def satoshi_to_btc(satoshi_count):
     if satoshi_count == 0: