diff --git a/Lib/lib-tk/test/test_ttk/support.py b/Lib/lib-tk/test/test_ttk/support.py
index c4d842a..6a1c8bf 100644
--- a/Lib/lib-tk/test/test_ttk/support.py
+++ b/Lib/lib-tk/test/test_ttk/support.py
@@ -1,4 +1,5 @@
 import re
+import sys
 import unittest
 import Tkinter as tkinter

@@ -22,6 +23,12 @@ class AbstractTkTest:
     @classmethod
     def tearDownClass(cls):
         cls.root.update_idletasks()
+
+
+        widgets = cls.root.grid_slaves()
+        for widget in widgets:
+            widget.destroy()
+
         cls.root.destroy()
         del cls.root
         tkinter._default_root = None
diff --git a/Lib/test/test_ttk_guionly.py b/Lib/test/test_ttk_guionly.py
index 3f7ff65..6ce9c65 100644
--- a/Lib/test/test_ttk_guionly.py
+++ b/Lib/test/test_ttk_guionly.py
@@ -36,5 +36,12 @@ def test_main():
         test_support.run_unittest(
             *runtktests.get_tests(text=False, packages=['test_ttk']))

+    from ttk import Widget
+    test_support.gc_collect()
+    if Widget.INSTANCE > 0:
+        print("leaking %s widgets" % Widget.INSTANCE)
+        raise Exception("leaking %s widgets" % Widget.INSTANCE)
+
+
 if __name__ == '__main__':
     test_main()
diff --git a/Lib/lib-tk/ttk.py b/Lib/lib-tk/ttk.py
index 1125439..61f1785 100644
--- a/Lib/lib-tk/ttk.py
+++ b/Lib/lib-tk/ttk.py
@@ -527,6 +527,7 @@ class Style(object):

 class Widget(Tkinter.Widget):
     """Base class for Tk themed widgets."""
+    INSTANCE = 0

     def __init__(self, master, widgetname, kw=None):
         """Constructs a Ttk Widget with the parent master.
@@ -553,7 +554,10 @@ class Widget(Tkinter.Widget):
             # Load tile now, if needed
             _load_tile(master)
         Tkinter.Widget.__init__(self, master, widgetname, kw=kw)
+        Widget.INSTANCE += 1

+    def __del__(self):
+        Widget.INSTANCE -= 1

     def identify(self, x, y):
         """Returns the name of the element at position x, y, or the empty