diff --git a/DOAN.Service/Bydlms/BydWorkorderService.cs b/DOAN.Service/Bydlms/BydWorkorderService.cs
index ed5c73d..cab3333 100644
--- a/DOAN.Service/Bydlms/BydWorkorderService.cs
+++ b/DOAN.Service/Bydlms/BydWorkorderService.cs
@@ -144,7 +144,7 @@ namespace DOAN.Service.Bydlms
             }
             cache = fisrt.Sort;
             fisrt.Sort = upIndex.Sort;
-            upIndex.Sort = fisrt.Sort;
+            upIndex.Sort = cache;
 
             UseTran2(() =>
             {
@@ -172,7 +172,7 @@ namespace DOAN.Service.Bydlms
             }
             cache = fisrt.Sort;
             fisrt.Sort = downIndex.Sort;
-            downIndex.Sort = fisrt.Sort;
+            downIndex.Sort = cache;
 
             UseTran2(() =>
             {