diff --git a/v2/client.go b/v2/client.go
index 93dae28c..19f3ea21 100644
--- a/v2/client.go
+++ b/v2/client.go
@@ -1043,7 +1043,7 @@ func (c *Client) NewGetAllCoinsInfoService() *GetAllCoinsInfoService {
 	return &GetAllCoinsInfoService{c: c}
 }
 
-// NewDustTransferService init Get All Margin Assets service
+// NewGetAllMarginAssetsService init Get All Margin Assets service
 func (c *Client) NewGetAllMarginAssetsService() *GetAllMarginAssetsService {
 	return &GetAllMarginAssetsService{c: c}
 }
@@ -1058,12 +1058,12 @@ func (c *Client) NewFiatPaymentsHistoryService() *FiatPaymentsHistoryService {
 	return &FiatPaymentsHistoryService{c: c}
 }
 
-// NewPayTransactionService init the pay transaction service
+// NewPayTradeHistoryService init the pay trade history service
 func (c *Client) NewPayTradeHistoryService() *PayTradeHistoryService {
 	return &PayTradeHistoryService{c: c}
 }
 
-// NewFiatPaymentsHistoryService init the spot rebate history service
+// NewSpotRebateHistoryService init the spot rebate history service
 func (c *Client) NewSpotRebateHistoryService() *SpotRebateHistoryService {
 	return &SpotRebateHistoryService{c: c}
 }