diff --git a/samples/html/test/test.cpp b/samples/html/test/test.cpp
index 71a83a5951..c726b60907 100644
--- a/samples/html/test/test.cpp
+++ b/samples/html/test/test.cpp
@@ -234,7 +234,7 @@ void MyFrame::OnPageOpen(wxCommandEvent& WXUNUSED(event))
 {
 #if wxUSE_FILEDLG
     wxString p = wxFileSelector(_("Open HTML document"), wxEmptyString,
-        wxEmptyString, wxEmptyString, wxT("HTML files|*.htm"));
+        wxEmptyString, wxEmptyString, wxT("HTML files|*.htm;*.html"));
 
     if (!p.empty())
         m_Html->LoadFile(wxFileName(p));