diff --git a/src/func_create_base.hpp b/src/func_create_base.hpp
index 5c3f0e95..100fca36 100644
--- a/src/func_create_base.hpp
+++ b/src/func_create_base.hpp
@@ -31,7 +31,7 @@ namespace Func
   {
   public:
     CreateBase();
-    virtual ~CreateBase() {}
+    virtual ~CreateBase();
 
   public:
     virtual int operator()(Branches2        &branches_,