diff --git a/auto_cli/configuration.py b/auto_cli/configuration.py
index d423dba..d04b568 100644
--- a/auto_cli/configuration.py
+++ b/auto_cli/configuration.py
@@ -5,7 +5,9 @@
 
 from .utils import _print_and_quit
 
-CONFIG_FILE = os.environ.get("AUTO_CLI_CONFIG_FILE", Path("~/.auto_cli").expanduser())
+CONFIG_FILE = Path(
+    os.environ.get("AUTO_CLI_CONFIG_FILE") or Path("~/.auto_cli").expanduser()
+)
 
 
 class Configuration:
diff --git a/auto_cli/parsing.py b/auto_cli/parsing.py
index 215fd41..fb4e298 100644
--- a/auto_cli/parsing.py
+++ b/auto_cli/parsing.py
@@ -127,7 +127,7 @@ def _parse_function_doc(function: Callable) -> _FunctionDoc:
     """Parse function documentation which adheres to the Sphinx standard
     https://www.sphinx-doc.org/en/master/usage/restructuredtext/domains.html#info-field-lists
     """
-    if not hasattr(function, "__doc__"):
+    if not hasattr(function, "__doc__") or function.__doc__ is None:
         return _FunctionDoc("", {})
 
     doc = function.__doc__