diff --git a/account.go b/account.go
index 85d48fa..690ccde 100644
--- a/account.go
+++ b/account.go
@@ -79,7 +79,7 @@ func (c *Client) InternalTxByAddress(address string, startBlock *int, endBlock *
 // contract address and/or from/to address.
 //
 // leave undesired condition to nil.
-func (c *Client) ERC20Transfers(contractAddress, address *string, startBlock *int, endBlock *int, page int, offset int) (txs []ERC20Transfer, err error) {
+func (c *Client) ERC20Transfers(contractAddress, address *string, startBlock *int, endBlock *int, page int, offset int, desc bool) (txs []ERC20Transfer, err error) {
 	param := M{
 		"page":   page,
 		"offset": offset,
@@ -89,6 +89,12 @@ func (c *Client) ERC20Transfers(contractAddress, address *string, startBlock *in
 	compose(param, "startblock", startBlock)
 	compose(param, "endblock", endBlock)
 
+	if desc {
+		param["sort"] = "desc"
+	} else {
+		param["sort"] = "asc"
+	}
+
 	err = c.call("account", "tokentx", param, &txs)
 	return
 }
diff --git a/client.go b/client.go
index e7422cd..56a64d0 100644
--- a/client.go
+++ b/client.go
@@ -123,8 +123,9 @@ func (c *Client) call(module, action string, param map[string]interface{}, outco
 		return
 	}
 
+	contentBytes := bytes.Replace(content.Bytes(), []byte(`"tokenDecimal":""`), []byte(`"tokenDecimal":"0"`), -1)
 	var envelope Envelope
-	err = json.Unmarshal(content.Bytes(), &envelope)
+	err = json.Unmarshal(contentBytes, &envelope)
 	if err != nil {
 		err = wrapErr(err, "json unmarshal envelope")
 		return