diff --git a/docs/userguide/credentials.rst b/docs/userguide/credentials.rst
index a2589e71..43d45ba9 100644
--- a/docs/userguide/credentials.rst
+++ b/docs/userguide/credentials.rst
@@ -64,10 +64,6 @@ are set, kas automatically creates a login file for the container
 registry at ``~/.docker/config.json``. This file is compatible with
 docker, podman and even skopeo.
 
-In other words, if ``CI_REGISTRY``, ``CI_REGISTRY_USER`` and ``CI_JOB_TOKEN`` are
-set, kas creates the container registry login file.
-If ``CI_JOB_TOKEN`` and ``CI_SERVER_HOST`` are set, kas creates the ``.netrc`` file.
-
 .. note::
   Make sure to assign the correct permissions to the ``CI_JOB_TOKEN``.
   For details, see `GitLab CI/CD job token <https://docs.gitlab.com/ee/ci/jobs/ci_job_token.html>`_.
@@ -75,12 +71,13 @@ If ``CI_JOB_TOKEN`` and ``CI_SERVER_HOST`` are set, kas creates the ``.netrc`` f
 Container Registry Authentication File
 --------------------------------------
 
-A file named ``config.json`` is saved as ``.docker/config.json`` in the kas home directory.
-It contains credentials for the container registry login.
-The syntax is specified `containers-auth.json specification <https://github.com/containers/image/blob/main/docs/containers-auth.json.5.md>`_.
+A file named ``config.json`` is saved as ``.docker/config.json`` in the kas
+home directory. It contains credentials for the container registry login.
+The syntax is described in the ``containers-auth.json specification``
+(https://github.com/containers/image/blob/main/docs/containers-auth.json.5.md).
 The authentication file is compatible with docker, podman and skopeo.
-When running in the GitLab CI, the ``CI_JOB_TOKEN`` is appended to automatically grant access
-according to the job permissions.
+When running in the GitLab CI, the ``CI_JOB_TOKEN`` is appended to
+automatically grant access according to the job permissions.
 
 Netrc File
 ----------
diff --git a/kas/libcmds.py b/kas/libcmds.py
index e7072ec0..db394c37 100644
--- a/kas/libcmds.py
+++ b/kas/libcmds.py
@@ -240,7 +240,8 @@ def _setup_registry_auth(self):
                 token = os.environ['CI_JOB_TOKEN']
                 base64_token = base64.b64encode(token.encode()).decode()
                 auths = data.get('auths', {})
-                auths.update({os.environ['CI_REGISTRY']: {"auth": base64_token}})
+                auths.update(
+                    {os.environ['CI_REGISTRY']: {"auth": base64_token}})
                 data['auths'] = auths
                 fds.seek(0)
                 fds.write(json.dumps(data, indent=4))