diff --git a/trezor_agent/gpg/decode.py b/trezor_agent/gpg/decode.py
index aa42f13..18e3834 100644
--- a/trezor_agent/gpg/decode.py
+++ b/trezor_agent/gpg/decode.py
@@ -5,7 +5,6 @@ import hashlib
 import io
 import logging
 import struct
-import subprocess
 
 import ecdsa
 import ed25519
diff --git a/trezor_agent/gpg/encode.py b/trezor_agent/gpg/encode.py
index 5692f04..7e4d44b 100644
--- a/trezor_agent/gpg/encode.py
+++ b/trezor_agent/gpg/encode.py
@@ -2,7 +2,7 @@
 import logging
 import time
 
-from . import decode, keyring, proto
+from . import keyring, proto
 from .. import client, factory, formats, util
 
 log = logging.getLogger(__name__)
diff --git a/trezor_agent/gpg/keyring.py b/trezor_agent/gpg/keyring.py
index cb14999..8dbca15 100644
--- a/trezor_agent/gpg/keyring.py
+++ b/trezor_agent/gpg/keyring.py
@@ -1,6 +1,5 @@
 """Tools for doing signature using gpg-agent."""
 
-import argparse
 import binascii
 import io
 import logging
@@ -147,7 +146,8 @@ def get_public_key(user_id, use_custom=False):
     args = ['gpg2', '--export'] + ([user_id] if user_id else [])
     pubkey_bytes = subprocess.check_output(args=args)
     if pubkey_bytes:
-        return decode.load_public_key(io.BytesIO(pubkey_bytes), use_custom=use_custom)
+        return decode.load_public_key(io.BytesIO(pubkey_bytes),
+                                      use_custom=use_custom)
     else:
         log.error('could not find public key %r in local GPG keyring', user_id)
         raise KeyError(user_id)