diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py
index b07fb1d..611ef55 100644
--- a/Lib/test/test_decimal.py
+++ b/Lib/test/test_decimal.py
@@ -1346,7 +1346,7 @@
 
         #the same hash that to an int
         self.assertEqual(hashit(Decimal(23)), hashit(23))
-        self.assertRaises(ValueError, hash, Decimal('sNaN'))
+        self.assertRaises(TypeError, hash, Decimal('sNaN'))
         self.assertTrue(hashit(Decimal('Inf')))
         self.assertTrue(hashit(Decimal('-Inf')))