diff --git a/src/AccessControl/tests/testSecurityManager.py b/src/AccessControl/tests/testSecurityManager.py
index bdd9bca..7087330 100644
--- a/src/AccessControl/tests/testSecurityManager.py
+++ b/src/AccessControl/tests/testSecurityManager.py
@@ -14,7 +14,6 @@
 """Tests for the SecurityManager implementations
 """
 
-import os
 import unittest
 
 from ..Implementation import PURE_PYTHON
diff --git a/src/AccessControl/tests/testZopeSecurityPolicy.py b/src/AccessControl/tests/testZopeSecurityPolicy.py
index 86293cb..068c49b 100644
--- a/src/AccessControl/tests/testZopeSecurityPolicy.py
+++ b/src/AccessControl/tests/testZopeSecurityPolicy.py
@@ -12,7 +12,6 @@
 ##############################################################################
 
 import _thread as thread
-import os
 import sys
 import unittest
 from doctest import DocTestSuite