diff --git a/wxPython/demo/RowColSizer.py b/wxPython/demo/RowColSizer.py
index 55f6cc17c6..1a5ac5119e 100644
--- a/wxPython/demo/RowColSizer.py
+++ b/wxPython/demo/RowColSizer.py
@@ -67,3 +67,9 @@ import wxPython.lib.rcsizer
 overview = wxPython.lib.rcsizer.__doc__
 
 
+
+if __name__ == '__main__':
+    import sys,os
+    import run
+    run.main(['', os.path.basename(sys.argv[0])])
+
diff --git a/wxPython/demo/wxTreeCtrl.py b/wxPython/demo/wxTreeCtrl.py
index 288f83c010..9a6a24f468 100644
--- a/wxPython/demo/wxTreeCtrl.py
+++ b/wxPython/demo/wxTreeCtrl.py
@@ -67,7 +67,7 @@ class TestTreeCtrlPanel(wxPanel):
                 self.tree.SetPyData(last, None)
                 self.tree.SetItemImage(last, fldridx, wxTreeItemIcon_Normal)
                 self.tree.SetItemImage(last, fldropenidx, wxTreeItemIcon_Expanded)
-                for z in range(500):
+                for z in range(5):
                     item = self.tree.AppendItem(last,  "item %d-%s-%d" % (x, chr(ord("a")+y), z))
                     self.tree.SetPyData(item, None)
                     self.tree.SetItemImage(item, fileidx, wxTreeItemIcon_Normal)