diff --git a/test/functional/tests/initialize/test_clean_reboot.py b/test/functional/tests/initialize/test_clean_reboot.py
index 8006b3d..3f4a10d 100644
--- a/test/functional/tests/initialize/test_clean_reboot.py
+++ b/test/functional/tests/initialize/test_clean_reboot.py
@@ -1,5 +1,6 @@
 #
 # Copyright(c) 2020-2022 Intel Corporation
+# Copyright(c) 2024 Huawei Technologies Co., Ltd.
 # SPDX-License-Identifier: BSD-3-Clause
 #
 
@@ -29,17 +30,17 @@ mount_point = "/mnt/test"
 @pytest.mark.require_plugin("power_control")
 def test_load_after_clean_shutdown(reboot_type, cache_mode, filesystem):
     """
-        title: Planned system shutdown test.
-        description: Test for data consistency after clean system shutdown.
-        pass_criteria:
-          - DUT should reboot successfully.
-          - Checksum of file on core device should be the same before and after reboot.
+    title: Planned system shutdown test.
+    description: Test for data consistency after clean system shutdown.
+    pass_criteria:
+      - DUT should reboot successfully.
+      - Checksum of file on core device should be the same before and after reboot.
     """
     with TestRun.step("Prepare CAS device."):
-        cache_disk = TestRun.disks['cache']
+        cache_disk = TestRun.disks["cache"]
         cache_disk.create_partitions([Size(1, Unit.GibiByte)])
         cache_dev = cache_disk.partitions[0]
-        core_dev = TestRun.disks['core']
+        core_dev = TestRun.disks["core"]
         cache = casadm.start_cache(cache_dev, cache_mode, force=True)
         core = cache.add_core(core_dev)
         core.create_filesystem(filesystem, blocksize=int(Size(1, Unit.Blocks4096)))
@@ -47,12 +48,9 @@ def test_load_after_clean_shutdown(reboot_type, cache_mode, filesystem):
 
     with TestRun.step("Create file on cache and count its checksum."):
         test_file = File(os.path.join(mount_point, "test_file"))
-        Dd()\
-            .input("/dev/zero")\
-            .output(test_file.full_path)\
-            .block_size(Size(1, Unit.KibiByte))\
-            .count(1024)\
-            .run()
+        Dd().input("/dev/zero").output(test_file.full_path).block_size(
+            Size(1, Unit.KibiByte)
+        ).count(1024).run()
         test_file.refresh_item()
         test_file_md5 = test_file.md5sum()
         sync()
@@ -62,7 +60,7 @@ def test_load_after_clean_shutdown(reboot_type, cache_mode, filesystem):
         if reboot_type == "soft":
             TestRun.executor.reboot()
         else:
-            power_control = TestRun.plugin_manager.get_plugin('power_control')
+            power_control = TestRun.plugin_manager.get_plugin("power_control")
             power_control.power_cycle()
 
     with TestRun.step("Load cache."):