diff --git a/pkg/exchange/okex/convert.go b/pkg/exchange/okex/convert.go
index 272152783..622171e43 100644
--- a/pkg/exchange/okex/convert.go
+++ b/pkg/exchange/okex/convert.go
@@ -214,10 +214,10 @@ func toGlobalOrderType(orderType okexapi.OrderType) (types.OrderType, error) {
 	case okexapi.OrderTypeMarket:
 		return types.OrderTypeMarket, nil
 
-	case okexapi.OrderTypeLimit, okexapi.OrderTypeFOK, okexapi.OrderTypeIOC, okexapi.OrderTypeMarketMakerProtection:
+	case okexapi.OrderTypeLimit, okexapi.OrderTypeFOK, okexapi.OrderTypeIOC:
 		return types.OrderTypeLimit, nil
 
-	case okexapi.OrderTypePostOnly, okexapi.OrderTypeMarketMakerProtectionPostOnly:
+	case okexapi.OrderTypePostOnly:
 		return types.OrderTypeLimitMaker, nil
 
 	}
diff --git a/pkg/exchange/okex/okexapi/client.go b/pkg/exchange/okex/okexapi/client.go
index 3730b3252..ccb81f70a 100644
--- a/pkg/exchange/okex/okexapi/client.go
+++ b/pkg/exchange/okex/okexapi/client.go
@@ -33,13 +33,11 @@ const (
 type OrderType string
 
 const (
-	OrderTypeMarket                        OrderType = "market"
-	OrderTypeLimit                         OrderType = "limit"
-	OrderTypePostOnly                      OrderType = "post_only"
-	OrderTypeFOK                           OrderType = "fok"
-	OrderTypeIOC                           OrderType = "ioc"
-	OrderTypeMarketMakerProtection         OrderType = "mmp"
-	OrderTypeMarketMakerProtectionPostOnly OrderType = "mmp_and_post_only"
+	OrderTypeMarket   OrderType = "market"
+	OrderTypeLimit    OrderType = "limit"
+	OrderTypePostOnly OrderType = "post_only"
+	OrderTypeFOK      OrderType = "fok"
+	OrderTypeIOC      OrderType = "ioc"
 )
 
 type InstrumentType string