diff --git a/include/wx/msw/helpbest.h b/include/wx/msw/helpbest.h
index f176eaa893..b8bd0bc1a9 100644
--- a/include/wx/msw/helpbest.h
+++ b/include/wx/msw/helpbest.h
@@ -71,7 +71,7 @@ public:
     }
 
     virtual bool KeywordSearch(const wxString& k,
-                               wxHelpSearchMode mode = wxHELP_SEARCH_ALL);
+                               wxHelpSearchMode mode = wxHELP_SEARCH_ALL)
     {
         return m_helpController->KeywordSearch( k, mode );
     }