diff --git a/plinth/modules/bind/__init__.py b/plinth/modules/bind/__init__.py
index 8575fc757..8e809456a 100644
--- a/plinth/modules/bind/__init__.py
+++ b/plinth/modules/bind/__init__.py
@@ -29,7 +29,7 @@ from plinth.daemon import Daemon
 from plinth.modules.firewall.components import Firewall
 from plinth.utils import format_lazy
 
-from .manifest import backup # noqa, pylint: disable=unused-import
+from .manifest import backup  # noqa, pylint: disable=unused-import
 
 version = 1
 
diff --git a/plinth/modules/firewall/__init__.py b/plinth/modules/firewall/__init__.py
index ab8acf366..9722333a2 100644
--- a/plinth/modules/firewall/__init__.py
+++ b/plinth/modules/firewall/__init__.py
@@ -25,7 +25,7 @@ from plinth import app as app_module
 from plinth import cfg, menu
 from plinth.utils import Version, format_lazy
 
-from .manifest import backup # noqa, pylint: disable=unused-import
+from .manifest import backup  # noqa, pylint: disable=unused-import
 
 version = 2
 
diff --git a/plinth/modules/ttrss/__init__.py b/plinth/modules/ttrss/__init__.py
index bf3f97615..db0633468 100644
--- a/plinth/modules/ttrss/__init__.py
+++ b/plinth/modules/ttrss/__init__.py
@@ -30,7 +30,7 @@ from plinth.modules.firewall.components import Firewall
 from plinth.modules.users import register_group
 from plinth.utils import Version, format_lazy
 
-from .manifest import backup, clients # noqa, pylint: disable=unused-import
+from .manifest import backup, clients  # noqa, pylint: disable=unused-import
 
 version = 3