diff --git a/tests/rules/test_ssh_known_host.py b/tests/rules/test_ssh_known_host.py
index d713acc..f2828a3 100644
--- a/tests/rules/test_ssh_known_host.py
+++ b/tests/rules/test_ssh_known_host.py
@@ -1,6 +1,5 @@
 import os
 import pytest
-from mock import Mock
 from thefuck.rules.ssh_known_hosts import match, get_new_command,\
     side_effect
 from tests.utils import Command
diff --git a/tests/rules/test_systemctl.py b/tests/rules/test_systemctl.py
index c16b1eb..eb9a270 100644
--- a/tests/rules/test_systemctl.py
+++ b/tests/rules/test_systemctl.py
@@ -1,4 +1,3 @@
-import pytest
 from thefuck.rules.systemctl import match, get_new_command
 from tests.utils import Command
 
diff --git a/tests/specific/test_sudo.py b/tests/specific/test_sudo.py
index bbc3d36..2b99eb7 100644
--- a/tests/specific/test_sudo.py
+++ b/tests/specific/test_sudo.py
@@ -1,5 +1,4 @@
 import pytest
-from mock import Mock
 from thefuck.specific.sudo import sudo_support
 from tests.utils import Command
 
diff --git a/tests/test_logs.py b/tests/test_logs.py
index 4b585ee..59aefd2 100644
--- a/tests/test_logs.py
+++ b/tests/test_logs.py
@@ -1,5 +1,4 @@
 import pytest
-from mock import Mock
 from thefuck import logs
 
 
diff --git a/thefuck/specific/sudo.py b/thefuck/specific/sudo.py
index 9941183..ddc6d40 100644
--- a/thefuck/specific/sudo.py
+++ b/thefuck/specific/sudo.py
@@ -1,6 +1,5 @@
 import six
 from decorator import decorator
-from ..types import Command
 
 
 @decorator