diff --git a/docs/includes/pairlists.md b/docs/includes/pairlists.md
index 2378fd261..b1d01e6f3 100644
--- a/docs/includes/pairlists.md
+++ b/docs/includes/pairlists.md
@@ -369,7 +369,10 @@ As this Filter uses past performance of the bot, it'll have some startup-period
 
 Filters low-value coins which would not allow setting stoplosses.
 
-Namely, pairs are blacklisted if the stop price would be the same as 99% of the stop price due to precision rounding on the exchange.
+Namely, pairs are blacklisted if a variance of one percent or more in the stop price would be caused by precision rounding on the exchange, i.e. `rounded(spot_price) <= rounded(spot_price * 0.99)`. The idea is to avoid coins with a value VERY close to their lower trading boundary, not allowing setting of proper stoploss.
+
+!!! Tip "PerformanceFilter is pointless for futures trading"
+    The above does not apply to shorts. And for longs, in theory the trade will be liquidated first.
 
 !!! Warning "Backtesting"
     `PrecisionFilter` does not support backtesting mode using multiple strategies.