diff --git a/nbdev/config.py b/nbdev/config.py
index 802d0506e..d29548717 100644
--- a/nbdev/config.py
+++ b/nbdev/config.py
@@ -35,6 +35,9 @@ def _git_repo():
     except OSError: return
 
 # %% ../nbs/api/config.ipynb 11
+# When adding a named default to the list below, be sure that that name
+# is also added to one of the sections in `_nbdev_cfg_sections` as well,
+# or it won't get written by `nbdev_create_config`:
 def _apply_defaults(
     cfg,
     lib_name='%(repo)s', # Package name
@@ -141,7 +144,7 @@ def _cfg2txt(cfg, head, sections, tail=''):
 # See https://github.com/fastai/nbdev/blob/master/settings.ini for examples.
 
 '''
-_nbdev_cfg_sections = {'Python library': 'repo lib_name version min_python license',
+_nbdev_cfg_sections = {'Python library': 'repo lib_name version min_python license black_formatting',
                        'nbdev': 'doc_path lib_path nbs_path recursive tst_flags put_version_in_init',
                        'Docs': 'branch custom_sidebar doc_host doc_baseurl git_url title',
                        'PyPI': 'audience author author_email copyright description keywords language status user'}
@@ -207,16 +210,16 @@ def config_key(c, default=None, path=True, missing_ok=None):
     warn("`config_key` is deprecated. Use `get_config().get` or `get_config().path` instead.", DeprecationWarning)
     return get_config().path(c, default) if path else get_config().get(c, default)
 
-# %% ../nbs/api/config.ipynb 44
+# %% ../nbs/api/config.ipynb 46
 def create_output(txt, mime):
     "Add a cell output containing `txt` of the `mime` text MIME sub-type"
     return [{"data": { f"text/{mime}": str(txt).splitlines(True) },
              "execution_count": 1, "metadata": {}, "output_type": "execute_result"}]
 
-# %% ../nbs/api/config.ipynb 45
+# %% ../nbs/api/config.ipynb 47
 def show_src(src, lang='python'): return Markdown(f'```{lang}\n{src}\n```')
 
-# %% ../nbs/api/config.ipynb 48
+# %% ../nbs/api/config.ipynb 50
 _re_version = re.compile('^__version__\s*=.*$', re.MULTILINE)
 _init = '__init__.py'
 
@@ -245,13 +248,13 @@ def add_init(path=None):
         if _has_py(fs) or any(filter(_has_py, subds)) and not (r/_init).exists(): (r/_init).touch()
     if get_config().get('put_version_in_init', True): update_version(path)
 
-# %% ../nbs/api/config.ipynb 51
+# %% ../nbs/api/config.ipynb 53
 def write_cells(cells, hdr, file, offset=0):
     "Write `cells` to `file` along with header `hdr` starting at index `offset` (mainly for nbdev internal use)."
     for cell in cells:
         if cell.source.strip(): file.write(f'\n\n{hdr} {cell.idx_+offset}\n{cell.source}')
 
-# %% ../nbs/api/config.ipynb 52
+# %% ../nbs/api/config.ipynb 54
 def _basic_export_nb(fname, name, dest=None):
     "Basic exporter to bootstrap nbdev."
     if dest is None: dest = get_config().lib_path
diff --git a/nbs/api/config.ipynb b/nbs/api/config.ipynb
index 7c37b67a2..372967453 100644
--- a/nbs/api/config.ipynb
+++ b/nbs/api/config.ipynb
@@ -130,6 +130,9 @@
    "outputs": [],
    "source": [
     "#|export\n",
+    "# When adding a named default to the list below, be sure that that name\n",
+    "# is also added to one of the sections in `_nbdev_cfg_sections` as well,\n",
+    "# or it won't get written by `nbdev_create_config`:\n",
     "def _apply_defaults(\n",
     "    cfg,\n",
     "    lib_name='%(repo)s', # Package name\n",
@@ -330,7 +333,7 @@
     "# See https://github.com/fastai/nbdev/blob/master/settings.ini for examples.\n",
     "\n",
     "'''\n",
-    "_nbdev_cfg_sections = {'Python library': 'repo lib_name version min_python license',\n",
+    "_nbdev_cfg_sections = {'Python library': 'repo lib_name version min_python license black_formatting',\n",
     "                       'nbdev': 'doc_path lib_path nbs_path recursive tst_flags put_version_in_init',\n",
     "                       'Docs': 'branch custom_sidebar doc_host doc_baseurl git_url title',\n",
     "                       'PyPI': 'audience author author_email copyright description keywords language status user'}\n",
@@ -593,6 +596,40 @@
     "    return get_config().path(c, default) if path else get_config().get(c, default)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Make sure that the `black_formatting` parameter is written:"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "test_settings.ini created.\n"
+     ]
+    }
+   ],
+   "source": [
+    "with tempfile.TemporaryDirectory() as d, working_directory(d):\n",
+    "    nbdev_create_config(repo='my-project', cfg_name='test_settings.ini',\n",
+    "                        branch='master', user='fastai', author='fastai',\n",
+    "                        author_email='fastai@example.com', description='test black_formatting',\n",
+    "                        black_formatting=True)\n",
+    "\n",
+    "    cfg = get_config('test_settings.ini', '.')\n",
+    "    test_eq(cfg.repo, 'my-project')\n",
+    "    test_eq(cfg.lib_path.name, 'my_project')\n",
+    "    test_eq(cfg.copyright, '2022 onwards, fastai')\n",
+    "    test_eq(cfg.black_formatting, True)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},