diff --git a/server/service/staff_user.go b/server/service/staff_user.go
index f265a69..838b42d 100644
--- a/server/service/staff_user.go
+++ b/server/service/staff_user.go
@@ -69,7 +69,7 @@ func (s *StaffUser) List(sess *session.AdminSession, req *api.StaffListReq) (int
 
 		// config
 		staffConfig := make(map[string]interface{})
-		corpConfig := make(map[string]interface{})
+		corpConfig := make([]map[string]interface{}, 0)
 		json.Unmarshal([]byte(goutil.EncodeJSON(corpStaffConfig)), &corpConfig)
 		json.Unmarshal([]byte(st.Config), &staffConfig)
 		config := make([]map[string]interface{}, 0)