diff --git a/src/ssh_audit/ssh_socket.py b/src/ssh_audit/ssh_socket.py
index 6853c1c..566612c 100644
--- a/src/ssh_audit/ssh_socket.py
+++ b/src/ssh_audit/ssh_socket.py
@@ -325,7 +325,7 @@ class SSH_Socket(ReadBuf, WriteBuf):
         self.__header = []
         self.__banner = None
 
-    def _close_socket(self, s: Optional[socket.socket]) -> None:  # pylint: disable=no-self-use
+    def _close_socket(self, s: Optional[socket.socket]) -> None:
         try:
             if s is not None:
                 s.shutdown(socket.SHUT_RDWR)
diff --git a/test/test_policy.py b/test/test_policy.py
index b78fab2..a008b81 100644
--- a/test/test_policy.py
+++ b/test/test_policy.py
@@ -41,15 +41,15 @@ class TestPolicy:
         for policy_name in Policy.BUILTIN_POLICIES:
             # Ensure that the policy name ends with " (version X)", where X is the 'version' field.
             version_str = " (version %s)" % Policy.BUILTIN_POLICIES[policy_name]['version']
-            assert(policy_name.endswith(version_str))
+            assert policy_name.endswith(version_str)
 
             # Ensure that each built-in policy can be loaded with Policy.load_builtin_policy().
-            assert(Policy.load_builtin_policy(policy_name) is not None)
+            assert Policy.load_builtin_policy(policy_name) is not None
 
         # Ensure that both server and client policy names are returned.
         server_policy_names, client_policy_names = Policy.list_builtin_policies()
-        assert(len(server_policy_names) > 0)
-        assert(len(client_policy_names) > 0)
+        assert len(server_policy_names) > 0
+        assert len(client_policy_names) > 0
 
 
     def test_policy_basic(self):
diff --git a/tox.ini b/tox.ini
index c74632a..baffcf8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -91,14 +91,12 @@ reports = no
 #output-format = colorized
 indent-string = "    "
 disable =
-        bad-continuation,
         broad-except,
         duplicate-code,
         fixme,
         invalid-name,
         line-too-long,
         missing-docstring,
-        mixed-indentation,
         no-else-raise,
         no-else-return,
         super-with-arguments,   # Can be re-factored, at some point.