diff --git a/borgmatic/actions/check.py b/borgmatic/actions/check.py
index 2d514ad0..be2d0c61 100644
--- a/borgmatic/actions/check.py
+++ b/borgmatic/actions/check.py
@@ -709,7 +709,7 @@ def run_check(
         **hook_context,
     )
 
-    logger.info(f'Running consistency checks')
+    logger.info('Running consistency checks')
 
     repository_id = borgmatic.borg.check.get_repository_id(
         repository['path'],
diff --git a/borgmatic/commands/borgmatic.py b/borgmatic/commands/borgmatic.py
index 1bcdbb7f..76f16a43 100644
--- a/borgmatic/commands/borgmatic.py
+++ b/borgmatic/commands/borgmatic.py
@@ -176,7 +176,7 @@ def run_configuration(config_filename, config, config_paths, arguments):
                         continue
 
                     yield from log_error_records(
-                        f'Error running actions for repository',
+                        'Error running actions for repository',
                         error,
                     )
                     encountered_error = error
diff --git a/borgmatic/hooks/data_source/mariadb.py b/borgmatic/hooks/data_source/mariadb.py
index abf7ba96..d309d9e5 100644
--- a/borgmatic/hooks/data_source/mariadb.py
+++ b/borgmatic/hooks/data_source/mariadb.py
@@ -49,7 +49,7 @@ def database_names_to_dump(database, extra_environment, dry_run):
         + ('--skip-column-names', '--batch')
         + ('--execute', 'show schemas')
     )
-    logger.debug(f'Querying for "all" MariaDB databases to dump')
+    logger.debug('Querying for "all" MariaDB databases to dump')
     show_output = execute_command_and_capture_output(
         show_command, extra_environment=extra_environment
     )
diff --git a/borgmatic/hooks/data_source/mysql.py b/borgmatic/hooks/data_source/mysql.py
index d302d1f5..a477d2ac 100644
--- a/borgmatic/hooks/data_source/mysql.py
+++ b/borgmatic/hooks/data_source/mysql.py
@@ -49,7 +49,7 @@ def database_names_to_dump(database, extra_environment, dry_run):
         + ('--skip-column-names', '--batch')
         + ('--execute', 'show schemas')
     )
-    logger.debug(f'Querying for "all" MySQL databases to dump')
+    logger.debug('Querying for "all" MySQL databases to dump')
     show_output = execute_command_and_capture_output(
         show_command, extra_environment=extra_environment
     )
diff --git a/borgmatic/hooks/data_source/postgresql.py b/borgmatic/hooks/data_source/postgresql.py
index 94a6e1f5..40c3e57b 100644
--- a/borgmatic/hooks/data_source/postgresql.py
+++ b/borgmatic/hooks/data_source/postgresql.py
@@ -85,7 +85,7 @@ def database_names_to_dump(database, extra_environment, dry_run):
         + (('--username', database['username']) if 'username' in database else ())
         + (tuple(database['list_options'].split(' ')) if 'list_options' in database else ())
     )
-    logger.debug(f'Querying for "all" PostgreSQL databases to dump')
+    logger.debug('Querying for "all" PostgreSQL databases to dump')
     list_output = execute_command_and_capture_output(
         list_command, extra_environment=extra_environment
     )
diff --git a/tests/unit/test_logger.py b/tests/unit/test_logger.py
index 6d8b0049..ef694413 100644
--- a/tests/unit/test_logger.py
+++ b/tests/unit/test_logger.py
@@ -254,7 +254,7 @@ def test_get_log_prefix_with_no_handlers_does_not_raise():
         )
     )
 
-    assert module.get_log_prefix() == None
+    assert module.get_log_prefix() is None
 
 
 def test_get_log_prefix_with_no_formatters_does_not_raise():
@@ -268,7 +268,7 @@ def test_get_log_prefix_with_no_formatters_does_not_raise():
         )
     )
 
-    assert module.get_log_prefix() == None
+    assert module.get_log_prefix() is None
 
 
 def test_get_log_prefix_with_no_prefix_does_not_raise():
@@ -284,7 +284,7 @@ def test_get_log_prefix_with_no_prefix_does_not_raise():
         )
     )
 
-    assert module.get_log_prefix() == None
+    assert module.get_log_prefix() is None
 
 
 def test_set_log_prefix_updates_all_handlers():