diff --git a/freqtrade/exchange/okx.py b/freqtrade/exchange/okx.py
index b11627bb1..03d66fb3d 100644
--- a/freqtrade/exchange/okx.py
+++ b/freqtrade/exchange/okx.py
@@ -70,8 +70,8 @@ class Okx(Exchange):
             symbols = []
 
             for symbol, market in markets.items():
-                if (market["swap"] and market["linear"]):
-                    symbols.append(market["symbol"])
+                if self.market_is_future(market):
+                    symbols.append(symbol)
 
             tiers = {}
             for symbol in symbols: