diff --git a/src/Mod/Part/App/Attacher.h b/src/Mod/Part/App/Attacher.h
index b2d22b637..8e39d2263 100644
--- a/src/Mod/Part/App/Attacher.h
+++ b/src/Mod/Part/App/Attacher.h
@@ -456,7 +456,7 @@ class ExceptionCancel : public Base::Exception
 public:
     ExceptionCancel(){}
     ExceptionCancel(char* msg){this->setMessage(msg);}
-    ~ExceptionCancel(){}
+    virtual ~ExceptionCancel() throw() {}
 };
 
 } // namespace Attacher