diff --git a/src/msw/treectrl.cpp b/src/msw/treectrl.cpp
index 577946bc0b..f174a3d021 100644
--- a/src/msw/treectrl.cpp
+++ b/src/msw/treectrl.cpp
@@ -463,11 +463,11 @@ wxTreeItemId wxTreeCtrl::GetLastChild(const wxTreeItemId& item) const
     long cookie;
 
     wxTreeItemId childLast,
-    child = GetFirstChild(last, cookie);
+    child = GetFirstChild(item, cookie);
     while ( child.IsOk() )
     {
         childLast = child;
-        child = GetNextChild(last, cookie);
+        child = GetNextChild(item, cookie);
     }
 
     return childLast;