diff --git a/FrontendWebApi/ApiControllers/BuildController.cs b/FrontendWebApi/ApiControllers/BuildController.cs
index a558312..31289f0 100644
--- a/FrontendWebApi/ApiControllers/BuildController.cs
+++ b/FrontendWebApi/ApiControllers/BuildController.cs
@@ -383,7 +383,7 @@ namespace FrontendWebApi.ApiControllers
                 string sql = $@"
                     SELECT
                         device_building_tag,
-                        device_system_tag
+                        sub_system_tag
                     FROM building_menu
                     WHERE building_tag = @building_tag
                     AND main_system_tag = @main_system_tag
diff --git a/FrontendWebApi/Models/Build.cs b/FrontendWebApi/Models/Build.cs
index 1828f21..4bc8352 100644
--- a/FrontendWebApi/Models/Build.cs
+++ b/FrontendWebApi/Models/Build.cs
@@ -131,7 +131,7 @@ namespace FrontendWebApi.Models
     public class BuildingSystemTagName
     {
         public string device_building_tag { get; set; }
-        public string device_system_tag { get; set; }
+        public string sub_system_tag { get; set; }
     }
 
     public class DeviceFloor : Device