diff --git a/include/wx/htmllbox.h b/include/wx/htmllbox.h
index 45a1765b58..f610b8383f 100644
--- a/include/wx/htmllbox.h
+++ b/include/wx/htmllbox.h
@@ -199,6 +199,7 @@ private:
 class WXDLLIMPEXP_HTML wxSimpleHtmlListBox : public wxHtmlListBox,
                                              public wxItemContainer
 {
+    DECLARE_ABSTRACT_CLASS(wxSimpleHtmlListBox)
 public:
     // wxListbox-compatible constructors
     // ---------------------------------
diff --git a/src/generic/htmllbox.cpp b/src/generic/htmllbox.cpp
index 2bc89731c1..bf063faeae 100644
--- a/src/generic/htmllbox.cpp
+++ b/src/generic/htmllbox.cpp
@@ -599,6 +599,9 @@ void wxHtmlListBox::OnLeftDown(wxMouseEvent& event)
 // wxSimpleHtmlListBox
 // ----------------------------------------------------------------------------
 
+IMPLEMENT_ABSTRACT_CLASS(wxSimpleHtmlListBox, wxHtmlListBox)
+
+
 bool wxSimpleHtmlListBox::Create(wxWindow *parent, wxWindowID id,
                                  const wxPoint& pos,
                                  const wxSize& size,