diff --git a/app/enterprise/controller/Im.php b/app/enterprise/controller/Im.php
index 877b296..079f432 100644
--- a/app/enterprise/controller/Im.php
+++ b/app/enterprise/controller/Im.php
@@ -423,7 +423,7 @@ class Im extends BaseController
             }
             // 更新群里面我的所有未读消息为0
             GroupUser::editGroupUser(['user_id' => $this->userInfo['user_id'], 'group_id' => $toContactId], ['unread' => 0]);
-        } else if($is_group==0) {
+        } else if($is_group==0 || $is_group==4) {
             $chat_identify = chat_identify($this->userInfo['user_id'], $to_user);
             // 更新我的未读消息为0
             Message::update(['is_read' => 1], [['chat_identify', '=', $chat_identify], ['to_user', '=', $this->userInfo['user_id']]]);
@@ -431,8 +431,6 @@ class Im extends BaseController
             wsSendMsg($to_user, 'readAll', ['toContactId' => $this->userInfo['user_id']]);
         } else if($is_group==2){
             $chat_identify = $to_user; 
-        } else if($is_group==4){
-            $chat_identify = chat_identify($this->userInfo['user_id'], $to_user);
         }
         return $chat_identify;
     }