diff --git a/interface/wx/html/winpars.h b/interface/wx/html/winpars.h
index 01ef3585bc..89ecf8d402 100644
--- a/interface/wx/html/winpars.h
+++ b/interface/wx/html/winpars.h
@@ -51,6 +51,11 @@ public:
 class wxHtmlWinTagHandler : public wxHtmlTagHandler
 {
 public:
+    /**
+        Constructor.
+    */
+    wxHtmlWinTagHandler();
+    
     /**
         Assigns @a parser to this handler. Each @b instance of handler
         is guaranteed to be called only from the one parser.