diff --git a/.env-sample b/.env-sample
index 9a73048b..f7fe89f3 100644
--- a/.env-sample
+++ b/.env-sample
@@ -89,6 +89,7 @@ FIAT_EXCHANGE_DURATION = 24
 PROPORTIONAL_ROUTING_FEE_LIMIT = 0.0002
 # Base flat limit fee for routing in Sats (used only when proportional is lower than this)
 MIN_FLAT_ROUTING_FEE_LIMIT = 10
+MIN_FLAT_ROUTING_FEE_LIMIT_REWARD = 2
 
 # Reward tip. Reward for every finished trade in the referral program (Satoshis)
 REWARD_TIP = 100