diff --git a/pytchat/core_async/livechat.py b/pytchat/core_async/livechat.py
index 639184f..c671d1a 100644
--- a/pytchat/core_async/livechat.py
+++ b/pytchat/core_async/livechat.py
@@ -11,7 +11,6 @@ from concurrent.futures import CancelledError
 from .buffer import Buffer
 from ..parser.live import Parser
 from .. import config
-from .. import mylogger
 from ..exceptions  import ChatParseException,IllegalFunctionCall
 from ..paramgen    import liveparam
 from ..processors.default.processor import DefaultProcessor
diff --git a/pytchat/core_async/replaychat.py b/pytchat/core_async/replaychat.py
index a36ae65..95499fe 100644
--- a/pytchat/core_async/replaychat.py
+++ b/pytchat/core_async/replaychat.py
@@ -12,7 +12,6 @@ from queue import Queue
 from .buffer import Buffer
 from ..parser.replay import Parser
 from .. import config
-from .. import mylogger
 from ..exceptions  import ChatParseException,IllegalFunctionCall
 from ..paramgen    import arcparam
 from ..processors.default.processor import DefaultProcessor
diff --git a/pytchat/core_multithread/livechat.py b/pytchat/core_multithread/livechat.py
index 2ca3d5d..30b9249 100644
--- a/pytchat/core_multithread/livechat.py
+++ b/pytchat/core_multithread/livechat.py
@@ -10,7 +10,6 @@ from concurrent.futures import CancelledError, ThreadPoolExecutor
 from .buffer import Buffer
 from ..parser.live import Parser
 from .. import config
-from .. import mylogger
 from ..exceptions  import ChatParseException,IllegalFunctionCall
 from ..paramgen    import liveparam
 from ..processors.default.processor import DefaultProcessor
diff --git a/pytchat/core_multithread/replaychat.py b/pytchat/core_multithread/replaychat.py
index 448d6f6..43b5e2e 100644
--- a/pytchat/core_multithread/replaychat.py
+++ b/pytchat/core_multithread/replaychat.py
@@ -11,7 +11,6 @@ from queue import Queue
 from .buffer import Buffer
 from ..parser.replay import Parser
 from .. import config
-from .. import mylogger
 from ..exceptions  import ChatParseException,IllegalFunctionCall
 from ..paramgen    import arcparam
 from ..processors.default.processor import DefaultProcessor
diff --git a/pytchat/parser/live.py b/pytchat/parser/live.py
index 908d1c6..e32177f 100644
--- a/pytchat/parser/live.py
+++ b/pytchat/parser/live.py
@@ -6,7 +6,6 @@ This module is parser of live chat JSON.
 
 import json
 from .. import config
-from .. import mylogger
 from .. exceptions import ( 
     ResponseContextError, 
     NoContentsException, 
diff --git a/pytchat/parser/replay.py b/pytchat/parser/replay.py
index 051e04e..7399238 100644
--- a/pytchat/parser/replay.py
+++ b/pytchat/parser/replay.py
@@ -1,6 +1,5 @@
 import json
 from .. import config
-from .. import mylogger
 from .. exceptions import ( 
     ResponseContextError, 
     NoContentsException, 
diff --git a/pytchat/processors/compatible/processor.py b/pytchat/processors/compatible/processor.py
index 32a3a64..9b799d3 100644
--- a/pytchat/processors/compatible/processor.py
+++ b/pytchat/processors/compatible/processor.py
@@ -5,7 +5,6 @@ from .renderer.paidmessage import LiveChatPaidMessageRenderer
 from .renderer.paidsticker import LiveChatPaidStickerRenderer
 from .renderer.legacypaid import LiveChatLegacyPaidMessageRenderer
 from .. chat_processor import ChatProcessor
-from ... import mylogger
 from ... import config
 logger = config.logger(__name__)
 
diff --git a/pytchat/processors/default/processor.py b/pytchat/processors/default/processor.py
index 4bff021..8c33c8e 100644
--- a/pytchat/processors/default/processor.py
+++ b/pytchat/processors/default/processor.py
@@ -6,7 +6,6 @@ from .renderer.paidsticker import LiveChatPaidStickerRenderer
 from .renderer.legacypaid import LiveChatLegacyPaidMessageRenderer
 from .. chat_processor import ChatProcessor
 from ... import config
-from ... import mylogger
 logger = config.logger(__name__)
 
 class Chatdata: