diff --git a/source/leanvtk/leanvtk.hpp b/source/leanvtk/leanvtk.hpp
index 8a17d5e0..012b044f 100644
--- a/source/leanvtk/leanvtk.hpp
+++ b/source/leanvtk/leanvtk.hpp
@@ -141,6 +141,8 @@ class VTKDataNodeBase {
       , binary_(false)
   {}
 
+  virtual ~VTKDataNodeBase() = default;
+
   virtual void write(std::ostream &os) const
   {
   };