diff --git a/controllers/mtwm_callback.go b/controllers/mtwm_callback.go
index c4ad7b0c8..9047edbd5 100644
--- a/controllers/mtwm_callback.go
+++ b/controllers/mtwm_callback.go
@@ -89,6 +89,10 @@ func (c *MtwmController) StoreBind() {
 }
 
 func (c *MtwmController) IMCallback() {
+	c.OnIMCallback()
+}
+
+func (c *MtwmController) OnIMCallback() {
 	c.Data["json"] = mtwmapi.Err2CallbackResponse(nil, "")
 	msg, callbackResponse := api.MtwmAPI.GetIMCallbackMsg(c.Ctx.Request)
 	if callbackResponse == nil {