diff --git a/tricircle/api/controllers/root.py b/tricircle/api/controllers/root.py
index e2cce1f5..c0b8a6bc 100644
--- a/tricircle/api/controllers/root.py
+++ b/tricircle/api/controllers/root.py
@@ -14,7 +14,6 @@
 #    under the License.
 
 
-import oslo_log.log as logging
 import pecan
 from pecan import request
 
@@ -23,9 +22,6 @@ from tricircle.api.controllers import routing
 import tricircle.common.context as t_context
 
 
-LOG = logging.getLogger(__name__)
-
-
 def expose(*args, **kwargs):
     kwargs.setdefault('content_type', 'application/json')
     kwargs.setdefault('template', 'json')
diff --git a/tricircle/common/utils.py b/tricircle/common/utils.py
index 7a0277dd..397e24ba 100644
--- a/tricircle/common/utils.py
+++ b/tricircle/common/utils.py
@@ -17,7 +17,6 @@ import six
 
 import pecan
 
-from oslo_log import log as logging
 from oslo_utils import uuidutils
 
 from tricircle.common import constants as cons
@@ -25,8 +24,6 @@ import tricircle.common.exceptions as t_exceptions
 from tricircle.common.i18n import _
 import tricircle.db.api as db_api
 
-LOG = logging.getLogger(__name__)
-
 
 def get_import_path(cls):
     return cls.__module__ + "." + cls.__name__
diff --git a/tricircle/common/xrpcapi.py b/tricircle/common/xrpcapi.py
index 58f771cb..2804febd 100644
--- a/tricircle/common/xrpcapi.py
+++ b/tricircle/common/xrpcapi.py
@@ -17,7 +17,6 @@ Client side of the job daemon RPC API.
 """
 
 from oslo_config import cfg
-from oslo_log import log as logging
 import oslo_messaging as messaging
 
 import rpc
@@ -35,8 +34,6 @@ rpcapi_cap_opt = cfg.StrOpt('xjobapi',
                                  'xjob api in any service')
 CONF.register_opt(rpcapi_cap_opt, 'upgrade_levels')
 
-LOG = logging.getLogger(__name__)
-
 
 class XJobAPI(object):
 
diff --git a/tricircle/tests/unit/api/controllers/test_routing.py b/tricircle/tests/unit/api/controllers/test_routing.py
index fa6b1944..73b09beb 100644
--- a/tricircle/tests/unit/api/controllers/test_routing.py
+++ b/tricircle/tests/unit/api/controllers/test_routing.py
@@ -23,10 +23,6 @@ from tricircle.common import policy
 from tricircle.db import api as db_api
 from tricircle.db import core
 
-from oslo_log import log as logging
-
-LOG = logging.getLogger(__name__)
-
 
 class FakeResponse(object):
     def __new__(cls, code=500):