diff --git a/interface/wx/variant.h b/interface/wx/variant.h
index 6c32b33a84..42575ddc77 100644
--- a/interface/wx/variant.h
+++ b/interface/wx/variant.h
@@ -523,7 +523,7 @@ public:
 
     @see wxVariant, wxGetVariantCast()
 */
-class wxVariantData
+class wxVariantData : public wxObjectRefData
 {
 public:
     /**