diff --git a/lib/Crypto/SelfTest/PublicKey/test_ECC_25519.py b/lib/Crypto/SelfTest/PublicKey/test_ECC_25519.py
index 4ddf3cfc7..9f14131ff 100644
--- a/lib/Crypto/SelfTest/PublicKey/test_ECC_25519.py
+++ b/lib/Crypto/SelfTest/PublicKey/test_ECC_25519.py
@@ -105,13 +105,13 @@ def test_equal(self):
 
     def test_pai(self):
         pai = EccPoint(0, 1, curve="Ed25519")
-        self.failUnless(pai.is_point_at_infinity())
+        self.assertTrue(pai.is_point_at_infinity())
         self.assertEqual(pai, pai.point_at_infinity())
 
     def test_negate(self):
         negG = -self.pointG
         sum = self.pointG + negG
-        self.failUnless(sum.is_point_at_infinity())
+        self.assertTrue(sum.is_point_at_infinity())
 
     def test_addition(self):
         self.assertEqual(self.pointG + self.pointG2, self.pointG3)