diff --git a/config_examples/config_full.example.json b/config_examples/config_full.example.json
index f076ffaf1..74457d2b6 100644
--- a/config_examples/config_full.example.json
+++ b/config_examples/config_full.example.json
@@ -93,6 +93,7 @@
         "secret": "your_exchange_secret",
         "password": "",
         "log_responses": false,
+        // "unknown_fee_rate": 1,
         "ccxt_config": {},
         "ccxt_async_config": {},
         "pair_whitelist": [