diff --git a/factory.h b/factory.h
index ef5a59e4..5b65db3d 100644
--- a/factory.h
+++ b/factory.h
@@ -12,6 +12,7 @@ template <class AbstractClass>
 class ObjectFactory
 {
 public:
+	virtual ~ObjectFactory () {}
 	virtual AbstractClass * CreateObject() const =0;
 };