diff --git a/src/WMS.Web.Api/Controllers/TestController.cs b/src/WMS.Web.Api/Controllers/TestController.cs
index 144889c6..0273ce3e 100644
--- a/src/WMS.Web.Api/Controllers/TestController.cs
+++ b/src/WMS.Web.Api/Controllers/TestController.cs
@@ -195,7 +195,7 @@ namespace WMS.Web.Api.Controllers
             var materials_result = await _erpService.BillQueryForMaterial();
             var materials = materials_result.Data.ToList();
 
-            List<int> mIds = materials.Where(w => materialNumbers.Equals(w.MaterialNumber)).Select(s => s.MaterialId).ToList();
+            List<int> mIds = materials.Where(w => materialNumbers.Contains(w.MaterialNumber)).Select(s => s.MaterialId).ToList();
             int jn = 3;
             if (mIds.Count() <= 0)
                 mIds= materials.Skip((new Random()).Next(1000, 10000)).Take(4).Select(s => s.MaterialId).ToList();