diff --git a/tests/test_pycrypto_keys.py b/tests/test_pycrypto_keys.py
index 667e93fa..241ef74a 100755
--- a/tests/test_pycrypto_keys.py
+++ b/tests/test_pycrypto_keys.py
@@ -84,7 +84,6 @@ def test_create_rsa_signature(self):
                       pycrypto.create_rsa_signature, '', data)
    
     # Check for invalid 'data'.
-    print(repr(private_rsa))
     pycrypto.create_rsa_signature(private_rsa, '')
     
     self.assertRaises(tuf.CryptoError,
diff --git a/tests/test_updater.py b/tests/test_updater.py
index 682ee6a7..cbf6c63a 100755
--- a/tests/test_updater.py
+++ b/tests/test_updater.py
@@ -443,8 +443,6 @@ def test_2__import_delegations(self):
     self.repository_updater.metadata['current']['targets']\
       ['delegations']['keys'][existing_keyid]['keyid'] = '123'
     
-    print(repr(self.repository_updater.metadata['current']['targets']\
-      ['delegations']['keys'][existing_keyid]['keyid']))
     self.repository_updater._import_delegations('targets')
     #self.assertRaises(tuf.Error, self.repository_updater._import_delegations,
     #                  'targets')
@@ -1227,7 +1225,7 @@ def test_9__get_target_hash(self):
   def test_10__hard_check_file_length(self):
     # Test for exception if file object is not equal to trusted file length.
     temp_file_object = tuf.util.TempFile()
-    temp_file_object.write('X')
+    temp_file_object.write(b'X')
     temp_file_object.seek(0)
     self.assertRaises(tuf.DownloadLengthMismatchError,
                      self.repository_updater._hard_check_file_length,
@@ -1240,7 +1238,7 @@ def test_10__hard_check_file_length(self):
   def test_10__soft_check_file_length(self):
     # Test for exception if file object is not equal to trusted file length.
     temp_file_object = tuf.util.TempFile()
-    temp_file_object.write('XXX')
+    temp_file_object.write(b'XXX')
     temp_file_object.seek(0)
     self.assertRaises(tuf.DownloadLengthMismatchError,
                      self.repository_updater._soft_check_file_length,
diff --git a/tests/test_util.py b/tests/test_util.py
index 5c897a49..b5ce3694 100755
--- a/tests/test_util.py
+++ b/tests/test_util.py
@@ -241,7 +241,7 @@ def test_A6_tempfile_decompress_temp_file_object(self):
     
     # Test decompression of invalid gzip file.
     temp_file = tuf.util.TempFile()
-    temp_file.write('bad zip')
+    temp_file.write(b'bad zip')
     contents = temp_file.read()
     self.assertRaises(tuf.DecompressionError,
                       temp_file.decompress_temp_file_object, 'gzip')