diff --git a/Lib/sets.py b/Lib/sets.py
index 99ee931..b1743da 100644
--- a/Lib/sets.py
+++ b/Lib/sets.py
@@ -439,10 +439,8 @@
     def __setstate__(self, data):
         self._data, = data
 
-    def __hash__(self):
-        """A Set cannot be hashed."""
-        # We inherit object.__hash__, so we must deny this explicitly
-        raise TypeError, "Can't hash a Set, only an ImmutableSet."
+    # We inherit object.__hash__, so we must deny this explicitly
+    __hash__ = None
 
     # In-place union, intersection, differences.
     # Subtle:  The xyz_update() functions deliberately return None,