diff --git a/docs/concepts/key_concepts.md b/docs/concepts/key-concepts.md
similarity index 100%
rename from docs/concepts/key_concepts.md
rename to docs/concepts/key-concepts.md
diff --git a/docs/index.rst b/docs/index.rst
index 6c14f269..1c89426a 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -6,7 +6,6 @@
    :parser: myst_parser.sphinx_
 
 .. toctree::
-   :maxdepth: 2
    :caption: Key Concepts
    :glob:
    :hidden:
diff --git a/pytest-embedded/pytest_embedded/plugin.py b/pytest-embedded/pytest_embedded/plugin.py
index 204d4c2e..1a977555 100644
--- a/pytest-embedded/pytest_embedded/plugin.py
+++ b/pytest-embedded/pytest_embedded/plugin.py
@@ -1,3 +1,4 @@
+import argparse
 import contextlib
 import dbm
 import functools
@@ -9,7 +10,6 @@
 import os
 import shelve
 import subprocess
-import sys
 import tempfile
 import typing as t
 import xml.dom.minidom
@@ -295,8 +295,7 @@ def _gte_one_int(v) -> int:
         if v >= 1:
             return v
 
-    print('"count" value should be a integer greater or equal to 1')
-    sys.exit(1)
+    raise argparse.ArgumentTypeError('should be a integer greater or equal to 1')
 
 
 def _str_bool(v: str) -> t.Union[bool, str, None]: