fix review issues
diff --git a/src/OpenSSL/crypto.py b/src/OpenSSL/crypto.py
index b75fa8b..71b6c51 100644
--- a/src/OpenSSL/crypto.py
+++ b/src/OpenSSL/crypto.py
@@ -1,5 +1,6 @@
import datetime
-from time import mktime, time
+
+from time import mktime
from base64 import b16encode
from functools import partial
from operator import __eq__, __ne__, __lt__, __le__, __gt__, __ge__
@@ -1209,7 +1210,7 @@
:py:const:`False` otherwise.
:rtype: :py:class:`bool`
"""
- time_string = self.get_notAfter()
+ time_string = _native(self.get_notAfter())
timestamp = mktime(datetime.datetime.strptime(
time_string, "%Y%m%d%H%M%SZ").timetuple())
now = mktime(datetime.datetime.utcnow().timetuple())