diff --git a/include/wx/msw/treectrl.h b/include/wx/msw/treectrl.h
index 8574600564..bdb4123a74 100644
--- a/include/wx/msw/treectrl.h
+++ b/include/wx/msw/treectrl.h
@@ -251,11 +251,6 @@ protected:
     wxTextCtrl  *m_textCtrl;        // text control in which it is edited
     wxTreeItemId m_idEdited;        // the item being edited
 
-    wxImageList *m_imageListNormal, // images for tree elements
-                *m_imageListState;  // special images for app defined states
-    bool         m_ownsImageListNormal,
-                 m_ownsImageListState;
-
 private:
     // the common part of all ctors
     void Init();