diff --git a/include/wx/propgrid/propgrid.h b/include/wx/propgrid/propgrid.h
index 4cbda4c90d..7a4587a63f 100644
--- a/include/wx/propgrid/propgrid.h
+++ b/include/wx/propgrid/propgrid.h
@@ -1580,7 +1580,7 @@ protected:
 
 #if !WXWIN_COMPATIBILITY_3_0
     // List of editors and their event handlers to be deleted in idle event handler.
-    wxArrayPGObject     m_deletedEditorObjects;
+    wxVector<wxObject*> m_deletedEditorObjects;
 #endif
 
     // List of key codes that will not be handed over to editor controls.
diff --git a/include/wx/propgrid/propgriddefs.h b/include/wx/propgrid/propgriddefs.h
index 91ee22a8c5..1a18eccbac 100644
--- a/include/wx/propgrid/propgriddefs.h
+++ b/include/wx/propgrid/propgriddefs.h
@@ -312,9 +312,11 @@ WX_DECLARE_HASH_SET_WITH_DECL(int,
                               wxPGHashSetInt,
                               class WXDLLIMPEXP_PROPGRID);
 
+#if WXWIN_COMPATIBILITY_3_0
 WX_DEFINE_TYPEARRAY_WITH_DECL_PTR(wxObject*, wxArrayPGObject,
                                   wxBaseArrayPtrVoid,
                                   class WXDLLIMPEXP_PROPGRID);
+#endif // WXWIN_COMPATIBILITY_3_0
 
 // -----------------------------------------------------------------------