diff --git a/inc/hgl/type/Smart.h b/inc/hgl/type/Smart.h
index 2949eff..4d36f05 100644
--- a/inc/hgl/type/Smart.h
+++ b/inc/hgl/type/Smart.h
@@ -462,6 +462,11 @@ namespace hgl
 
     public:
 
+        AutoDelete()
+        {
+            obj=nullptr;
+        }
+
         AutoDelete(T *o)
         {
             obj=o;