diff --git a/README.md b/README.md
index 3753a015b..4e307300e 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,9 @@ profit dips below -10% for a given trade. This parameter is optional.
 Possible values are `running` or `stopped`. (default=`running`)
 If the value is `stopped` the bot has to be started with `/start` first.
 
+`ask_last_balance` sets the bidding price. Value `0.0` will use `ask` price, `1.0` will
+use the `last` price and values between those interpolate between ask and last price.
+
 The other values should be self-explanatory,
 if not feel free to raise a github issue.