diff --git a/README.md b/README.md
index 27cab333..9ad84ddd 100644
--- a/README.md
+++ b/README.md
@@ -52,7 +52,7 @@ The following cryptocurrency exchanges are supported:
 | Livecoin       | x           | x            |            |
 | NDAX           | x           | x            | T R        |
 | OKCoin         | x           | x            | R B        |
-| OKEx           | x           | x            | R B O      |
+| OKEx           | x           | x            | T R B O    |
 | Poloniex       | x           | x            | T R B      |
 | YoBit          | x           | x            |            |
 | ZB.com         | wip         |              | R          |
diff --git a/src/ExchangeSharp/API/Exchanges/OKGroup/ExchangeOKExAPI.cs b/src/ExchangeSharp/API/Exchanges/OKGroup/ExchangeOKExAPI.cs
index 59b41ed8..b08e4d1d 100644
--- a/src/ExchangeSharp/API/Exchanges/OKGroup/ExchangeOKExAPI.cs
+++ b/src/ExchangeSharp/API/Exchanges/OKGroup/ExchangeOKExAPI.cs
@@ -337,7 +337,8 @@ protected override async Task<ExchangeOrderResult> OnPlaceOrderAsync(ExchangeOrd
 					throw new ArgumentNullException(nameof(order.Price), "Okex place order request requires price");
 				payload["px"] = order.Price.ToStringInvariant();
 			}
-
+			order.ExtraParameters.CopyTo(payload);
+			
 			var token = await MakeJsonRequestAsync<JToken>("/trade/order", BaseUrlV5, payload, "POST");
 			return new ExchangeOrderResult()
 			{