diff --git a/OpenAuth.WebApi/Controllers/ServiceControllers/AirportMaintenanceController.cs b/OpenAuth.WebApi/Controllers/ServiceControllers/AirportMaintenanceController.cs
index 9262209..dd62846 100644
--- a/OpenAuth.WebApi/Controllers/ServiceControllers/AirportMaintenanceController.cs
+++ b/OpenAuth.WebApi/Controllers/ServiceControllers/AirportMaintenanceController.cs
@@ -670,6 +670,7 @@ namespace OpenAuth.WebApi.Controllers.ServiceControllers
                     new("ClientId", info.ClientId),
                     new("UserId", info.UserId),
                     new("UserName", info.UserName),
+                    new("DeviceSn", info.DeviceSn),
                     new("ConnectTime", info.ConnectTime.ToString("O")),
                     new("IsLock", info.IsLock ? "true" : "false")
                 });
@@ -723,13 +724,13 @@ namespace OpenAuth.WebApi.Controllers.ServiceControllers
         [AllowAnonymous]
         public async Task<List<MqttClientResp>> GetLockedDeviceClients()
         {
-            var userIds = await _cache.SetMembersAsync("locked_devices");
+            var deviceSns = await _cache.SetMembersAsync("locked_devices");
 
             var result = new List<MqttClientResp>();
 
-            foreach (var userId in userIds)
+            foreach (var deviceSn in deviceSns)
             {
-                var entries = await _cache.HashGetAllAsync($"client:{userId}");
+                var entries = await _cache.HashGetAllAsync($"client:{deviceSn}");
                 if (entries.Length > 0)
                     result.Add(ParseClient(entries));
             }