diff --git a/tests/test_transform.py b/tests/test_transform.py
index ed3e38b..f919b1b 100644
--- a/tests/test_transform.py
+++ b/tests/test_transform.py
@@ -14,12 +14,12 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 
-import unittest2
+import unittest
 from rsa._compat import b
 from rsa.transform import int2bytes, bytes2int, _int2bytes
 
 
-class Test_int2bytes(unittest2.TestCase):
+class Test_int2bytes(unittest.TestCase):
     def test_accuracy(self):
         self.assertEqual(int2bytes(123456789), b('\x07[\xcd\x15'))
         self.assertEqual(_int2bytes(123456789), b('\x07[\xcd\x15'))