diff --git a/samples/menu/menu.cpp b/samples/menu/menu.cpp
index bc87eebf62..ef1ee21bf5 100644
--- a/samples/menu/menu.cpp
+++ b/samples/menu/menu.cpp
@@ -419,7 +419,7 @@ wxMenu *MyFrame::CreateDummyMenu(wxString *title)
 
     if ( title )
     {
-        title->Printf(wxT("Dummy menu &%d"), ++m_countDummy);
+        title->Printf(wxT("Dummy menu &%u"), (unsigned)++m_countDummy);
     }
 
     return menu;