diff --git a/interface/wx/htmllbox.h b/interface/wx/htmllbox.h
index 6c8af509a6..22717f7907 100644
--- a/interface/wx/htmllbox.h
+++ b/interface/wx/htmllbox.h
@@ -200,6 +200,9 @@ protected:
 
     @see wxSimpleHtmlListBox::Create
 */
+#define wxHLB_DEFAULT_STYLE     wxBORDER_SUNKEN
+#define wxHLB_MULTIPLE          wxLB_MULTIPLE
+
 class wxSimpleHtmlListBox : public wxHtmlListBox,
                             public wxItemContainer
 {