diff --git a/DOAN.Service/PBL/BigScreenService.cs b/DOAN.Service/PBL/BigScreenService.cs
index 2d44410..6194503 100644
--- a/DOAN.Service/PBL/BigScreenService.cs
+++ b/DOAN.Service/PBL/BigScreenService.cs
@@ -144,7 +144,7 @@ public class BigScreenService : BaseService<Storagelocation>, IBigScreenService
                 IsLight = layer.IsLight == 1,
                 // IsFeedingMaterial = (layer.PackageNum ?? 0) < (layer.AlarmNum ?? 2) && layer.IsLackAlarm == 1
                 IsFeedingMaterial = CalculateIsOneLayerNumFeedingMaterial(layer)
-            }).ToArray();
+            }).OrderBy(it => it.LayerNum).ToArray();
             var rackDto = new BigScreenDto
             {
                 Title = group.Key,