diff --git a/examples/user_interfaces/mathtext_wx.py b/examples/user_interfaces/mathtext_wx.py
index 7886e01a4b10..49908dce54f5 100644
--- a/examples/user_interfaces/mathtext_wx.py
+++ b/examples/user_interfaces/mathtext_wx.py
@@ -65,7 +65,7 @@ def __init__(self, parent, title):
             menu = wx.Menu()
             for i, (mt, func) in enumerate(functions):
                 bm = mathtext_to_wxbitmap(mt)
-                item = wx.MenuItem(menu, 1000 + i, "")
+                item = wx.MenuItem(menu, 1000 + i, " ")
                 item.SetBitmap(bm)
                 menu.AppendItem(item)
                 self.Bind(wx.EVT_MENU, self.OnChangePlot, item)