diff --git a/include/fc/shared_ptr.hpp b/include/fc/shared_ptr.hpp
index cd6a94c..a07ec46 100644
--- a/include/fc/shared_ptr.hpp
+++ b/include/fc/shared_ptr.hpp
@@ -46,7 +46,7 @@ namespace fc {
       shared_ptr( shared_ptr&& p )
       :_ptr(p._ptr){ p._ptr = nullptr; }
 
-      ~shared_ptr() { if( nullptr != _ptr ) { _ptr->release(); } }
+      ~shared_ptr() { if( nullptr != _ptr ) { _ptr->release(); _ptr = nullptr; } }
 
       shared_ptr& reset( T* v = nullptr, bool inc = false )  {
         if( v == _ptr ) return *this;