diff --git a/include/wx/private/markupparser.h b/include/wx/private/markupparser.h
index 751c9d67f7..9ae44ac5e0 100644
--- a/include/wx/private/markupparser.h
+++ b/include/wx/private/markupparser.h
@@ -78,6 +78,7 @@ class wxMarkupParserOutput
 {
 public:
     wxMarkupParserOutput() { }
+    virtual ~wxMarkupParserOutput() { }
 
     // Virtual functions called by wxMarkupParser while parsing the markup.