diff --git a/rebalance/rebalance.py b/rebalance/rebalance.py
index cd146af..f9989be 100755
--- a/rebalance/rebalance.py
+++ b/rebalance/rebalance.py
@@ -16,7 +16,7 @@ def setup_routing_fees(plugin, route, msatoshi):
         ch = next(c for c in channels.get('channels') if c['destination'] == r['id'])
         fee = Millisatoshi(ch['base_fee_millisatoshi'])
         # BOLT #7 requires fee >= fee_base_msat + ( amount_to_forward * fee_proportional_millionths / 1000000 )
-        fee += (msatoshi * ch['fee_per_millionth'] + 999_999) // 1_000_000	# integer math trick to round up
+        fee += (msatoshi * ch['fee_per_millionth'] + 10**6 - 1) // 10**6 # integer math trick to round up
         msatoshi += fee
         delay += ch['delay']