diff --git a/escpos/cli.py b/escpos/cli.py
index 5fa0d27..5dcda69 100755
--- a/escpos/cli.py
+++ b/escpos/cli.py
@@ -3,11 +3,8 @@
 from __future__ import absolute_import
 
 import argparse
-import sys
-import serial
 import six
-import os
-from . import printer, config
+from . import config
 
 # Used in demo method
 # Key: The name of escpos function and the argument passed on the CLI. Some
diff --git a/escpos/config.py b/escpos/config.py
index 2eed0bb..54aa0ea 100644
--- a/escpos/config.py
+++ b/escpos/config.py
@@ -48,7 +48,7 @@ class Config(object):
             else:
                 with open(config_path, 'rb') as f:
                     config = yaml.safe_load(f)
-        except EnvironmentError as e:
+        except EnvironmentError:
             raise exceptions.ConfigNotFoundError('Couldn\'t read config at {config_path}'.format(
                 config_path=str(config_path),
             ))