diff --git a/data/refdata/instruments.cfg b/data/refdata/instruments.cfg
index 5e8b75c..2224a1a 100644
--- a/data/refdata/instruments.cfg
+++ b/data/refdata/instruments.cfg
@@ -356,7 +356,7 @@
     "PERP-BTC-USD": {
         "base_asset": "BTC",
         "quote_asset": "USD",
-        "quantity_precision": "1",
+        "quantity_precision": "0.0001",
         "price_tick": 0.1
     },
     "PERP-BTC-USDC": {