diff --git a/web/App_Code/api/FilesSetController.cs b/web/App_Code/api/FilesSetController.cs
index afd7a51..fd8af69 100644
--- a/web/App_Code/api/FilesSetController.cs
+++ b/web/App_Code/api/FilesSetController.cs
@@ -90,8 +90,8 @@ public class FilesSetController : ApiController
             if (prod.Count() > 0)
             {
                 //刪除品項的相關文件
-                var prod2 = _db.actItem_files.Where(q => q.files_num.HasValue && ids.Contains(q.files_num.Value)).ToList();
-                if (prod2.Count > 0)
+                var prod2 = _db.actItem_files.Where(q => ids.Contains(q.files_num)).ToList();
+                if (prod2.Count() > 0)
                 {
                     _db.actItem_files.RemoveRange(prod2);
                 }