diff --git a/UsbDk/UsbDkUtil.h b/UsbDk/UsbDkUtil.h
index d94a059..5199b0a 100644
--- a/UsbDk/UsbDkUtil.h
+++ b/UsbDk/UsbDkUtil.h
@@ -352,6 +352,9 @@ class CWdmSet : private TAccessStrategy, public TCountingStrategy
         TInternalList TempList;
         SwapLists(TempList);
     }
+
+    CWdmSet(const CWdmSet&) = delete;
+    CWdmSet& operator= (const CWdmSet&) = delete;
 private:
     void SwapLists(TInternalList &OtherList)
     {