diff --git a/tacker/privileged/__init__.py b/tacker/privileged/__init__.py
index 6dc64b1a8..db3958554 100644
--- a/tacker/privileged/__init__.py
+++ b/tacker/privileged/__init__.py
@@ -22,7 +22,7 @@ from oslo_privsep import priv_context
 default = priv_context.PrivContext(
     __name__,
     cfg_section='privsep',
-    pypath="f{__name__}.default",
+    pypath=__name__ + '.default',
     capabilities=[caps.CAP_SYS_ADMIN,
                   caps.CAP_NET_ADMIN,
                   caps.CAP_DAC_OVERRIDE,
diff --git a/tacker/tests/unit/test_privsep.py b/tacker/tests/unit/test_privsep.py
index f169ff6a8..f2906fb1f 100644
--- a/tacker/tests/unit/test_privsep.py
+++ b/tacker/tests/unit/test_privsep.py
@@ -43,7 +43,8 @@ class PrivsepTest(base.BaseTestCase):
     def setUp(self):
         super(PrivsepTest, self).setUp()
 
-    @unittest.skipIf(_PWD == _PWD_ZUUL, "Failed on zuul for root priv")
+    @unittest.skipIf(_PWD == _PWD_ZUUL or os.getlogin() != 'stack',
+            "Failed on zuul or non-devstack env for root privilege")
     def test_privsep_ls(self):
         """Run ls with root privilege
 
@@ -58,7 +59,8 @@ class PrivsepTest(base.BaseTestCase):
         # 'boot' dir must be under '/'.
         self.assertIn('boot', res)
 
-    @unittest.skipIf(_PWD == _PWD_ZUUL, "Failed on zuul for root priv")
+    @unittest.skipIf(_PWD == _PWD_ZUUL or os.getlogin() != 'stack',
+            "Failed on zuul or non-devstack env for root privilege")
     def test_privsep_pwd(self):
         """Run pwd with root privilege
 
@@ -67,7 +69,8 @@ class PrivsepTest(base.BaseTestCase):
         res = tacker.privileged.linux_cmd.pwd()[0]
         self.assertEqual('/\n', res)
 
-    @unittest.skipIf(_PWD == _PWD_ZUUL, "Failed on zuul for root priv")
+    @unittest.skipIf(_PWD == _PWD_ZUUL or os.getlogin() != 'stack',
+            "Failed on zuul or non-devstack env for root privilege")
     def test_rootwrap(self):
         """Confirm a command can be run with tacker-rootwrap