diff --git a/client.go b/client.go
index e69679a..2199ba6 100644
--- a/client.go
+++ b/client.go
@@ -166,13 +166,15 @@ func (c *Client) call(module, action string, param map[string]interface{}, outco
 		return
 	}
 
+	fixedContent := bytes.ReplaceAll(content.Bytes(), []byte(`"transactionIndex":""`), []byte(`"transactionIndex":"0"`))
+
 	var envelope Envelope
-	err = json.Unmarshal(content.Bytes(), &envelope)
+	err = json.Unmarshal(fixedContent, &envelope)
 	if err != nil {
 		err = wrapErr(err, "json unmarshal envelope")
 		return
 	}
-	if envelope.Status != 1 {
+	if envelope.Status != "1" {
 		err = fmt.Errorf("etherscan server: %s", envelope.Message)
 		return
 	}
diff --git a/response.go b/response.go
index 5c418cf..fd523f7 100644
--- a/response.go
+++ b/response.go
@@ -17,7 +17,7 @@ import (
 // Envelope is the carrier of nearly every response
 type Envelope struct {
 	// 1 for good, 0 for error
-	Status int `json:"status,string"`
+	Status json.Number `json:"status"`
 	// OK for good, other words when Status equals 0
 	Message string `json:"message"`
 	// where response lies