diff --git a/src/tests/test_condensed.py b/src/tests/test_condensed.py
--- a/src/tests/test_condensed.py
+++ b/src/tests/test_condensed.py
@@ -70,14 +70,14 @@ class TestCondensed(TestCase):
 					self.assertEqual(reconstruct(*shares[:k]), secret)
 					try:
 						self.assertNotEqual(reconstruct(*shares[:k-1]), secret)
-					except UnicodeDecodeError:
+					except SException:
 						pass
 		shares=generate(b"\xfeaa",2,3)
-		with self.assertRaises(UnicodeDecodeError):
+		with self.assertRaises(SException):
 			reconstruct(*shares)
 
 	def testDecode(self):
-		with self.assertRaises(ValueError):
+		with self.assertRaises(SException):
 			decode("AAA")
 			decode("1.")
 			decode(".AAA")