diff --git a/.tests/ci-test-run.sh b/.tests/ci-test-run.sh
index 941825b7..ea13df35 100755
--- a/.tests/ci-test-run.sh
+++ b/.tests/ci-test-run.sh
@@ -8,6 +8,8 @@ set -e
 
 "$dp0/test-tools.sh" || exit 1
 
-cd "$dp0/../_AutoinstallCreator" && python3 -m unittest || exit 1
+if [[ "$is_windows_os" == true ]]; then
+  cd "$dp0/../_AutoinstallCreator" && python3 -m unittest || exit 1
+fi
 
 "$dp0/test-run.sh" -- testInternalCreate || exit 1
diff --git a/_AutoinstallCreator/test_update.py b/_AutoinstallCreator/test_update.py
index 0d085d5d..69b3f968 100644
--- a/_AutoinstallCreator/test_update.py
+++ b/_AutoinstallCreator/test_update.py
@@ -11,11 +11,11 @@
 _root_path: str = os.path.dirname(_self_path)
 _tools_path: str = os.path.join(_root_path, '.tools')
 
-busybox_exe_path: str = 'busybox'
+busybox_exe_path_arg: list[str] = []
 update_script_name: str = 'update.sh'
 package_name = 'AutoinstallCreator.sh'
 if sys.platform.startswith('win'):
-    busybox_exe_path = os.path.join(_tools_path, 'busybox.exe')
+    busybox_exe_path_arg = [os.path.join(_tools_path, 'busybox.exe')]
     update_script_name = 'update.bat'
     package_name = 'AutoinstallCreator.sh.bat'
 
@@ -45,7 +45,7 @@ def setUpClass(cls) -> None:
         pathlib.Path(os.path.join(_self_path, 'AutoinstallCreator.sh')).unlink(missing_ok=True)
         pathlib.Path(os.path.join(_self_path, 'AutoinstallCreator.sh.bat')).unlink(missing_ok=True)
 
-        result = subprocess.run(['bash', os.path.join(_self_path, 'release.sh')],
+        result = subprocess.run(busybox_exe_path_arg + ['bash', os.path.join(_self_path, 'release.sh')],
                                 check=True, stdout=subprocess.PIPE)
         cls.version_str = get_version_from_stdout(result.stdout)
 
@@ -57,9 +57,9 @@ def setUp(self):
         shutil.copyfile(os.path.join(_self_path, package_name), self.package_filepath)
 
     def test_version_up_to_date(self):
-        subprocess.run(['bash', self.package_filepath], cwd=_self_tmp_path)
+        subprocess.run(busybox_exe_path_arg + ['bash', self.package_filepath], cwd=_self_tmp_path)
 
-        result = subprocess.run(['bash', os.path.join(_self_tmp_path, self.version_str, 'update.sh')],
+        result = subprocess.run(busybox_exe_path_arg + ['bash', os.path.join(_self_tmp_path, self.version_str, 'update.sh')],
                                 env={
                                     **os.environ,
                                     'MOCK_AUTOINSTALLCREATOR_VERSION_BODY': self.version_str,
@@ -69,7 +69,7 @@ def test_version_up_to_date(self):
         self.assertTrue(result.stdout.endswith(b'\nVersion is up to date\n'))
 
     def test_update_to_new_version(self):
-        subprocess.run(['bash', self.package_filepath, '--target', self.test_old_version],
+        subprocess.run(busybox_exe_path_arg + ['bash', self.package_filepath, '--target', self.test_old_version],
                        cwd=_self_tmp_path)
 
         io_tools.write_text(os.path.join(_self_tmp_path, self.test_old_version, '_AutoinstallCreator', 'version.txt'),