diff --git a/application/api/model/Sign.php b/application/api/model/Sign.php
index a703248..d01f4b3 100644
--- a/application/api/model/Sign.php
+++ b/application/api/model/Sign.php
@@ -416,7 +416,7 @@ class Sign extends Model
                         ->update(['user_id' => $user_id]);
 
                     db::name('vs_room_pit')->where(['room_id' => $room_id, 'pit_number' => $user_pit_info['pit_number']])
-                        ->update(['before_pit_number' => $user_pit_info['pit_number'], 'pit_number' => 0]);
+                        ->update(['before_pit_number' => $user_pit_info['pit_number'], 'user_id' => 0]);
 
                     //推送换麦消息
                     $this->sendPitChangeMessage($user_id, $room_id, $user_pit_info['pit_number'], 2);