diff --git a/platformapi/ebaiapi/callback.go b/platformapi/ebaiapi/callback.go
index 5892239a..1597affe 100644
--- a/platformapi/ebaiapi/callback.go
+++ b/platformapi/ebaiapi/callback.go
@@ -29,7 +29,7 @@ type CallbackMsg struct {
 
 func (a *API) Err2CallbackResponse(cmd string, err error, data interface{}) *CallbackResponse {
 	response := &CallbackResponse{
-		Cmd:       cmd,
+		Cmd:       "resp." + cmd,
 		Source:    a.source,
 		Ticket:    utils.GetUpperUUID(),
 		Timestamp: utils.GetCurTimestamp(),
@@ -49,7 +49,7 @@ func (a *API) Err2CallbackResponse(cmd string, err error, data interface{}) *Cal
 		}
 	}
 	params := url.Values{
-		"cmd":       []string{"resp." + cmd},
+		"cmd":       []string{response.Cmd},
 		"version":   []string{utils.Int2Str(response.Version)},
 		"timestamp": []string{utils.Int64ToStr(response.Timestamp)},
 		"ticket":    []string{response.Ticket},