diff --git a/pyface/ui/wx/tree/tree.py b/pyface/ui/wx/tree/tree.py
index 7d13db4e8..5fb61d127 100644
--- a/pyface/ui/wx/tree/tree.py
+++ b/pyface/ui/wx/tree/tree.py
@@ -182,7 +182,7 @@ def __init__(self, parent, image_size=(16, 16), **traits):
 
         # Create the toolkit-specific control.
         self.control = tree = _Tree(
-            self, parent, style=self._get_style()
+            self, parent, wxid=wx.ID_ANY, style=self._get_style()
         )
 
         # Wire up the wx tree events.