diff --git a/src/Disks/ObjectStorages/FakeMetadataStorageFromDisk.cpp b/src/Disks/ObjectStorages/FakeMetadataStorageFromDisk.cpp
index 76e6aebff1c..d1413bd4e88 100644
--- a/src/Disks/ObjectStorages/FakeMetadataStorageFromDisk.cpp
+++ b/src/Disks/ObjectStorages/FakeMetadataStorageFromDisk.cpp
@@ -11,7 +11,6 @@ namespace DB
 namespace ErrorCodes
 {
     extern const int NOT_IMPLEMENTED;
-    extern const int FS_METADATA_ERROR;
 }
 
 FakeMetadataStorageFromDisk::FakeMetadataStorageFromDisk(
diff --git a/src/Disks/ObjectStorages/MetadataStorageFromDiskTransactionOperations.cpp b/src/Disks/ObjectStorages/MetadataStorageFromDiskTransactionOperations.cpp
index 7c0a60509ab..72da240cf8a 100644
--- a/src/Disks/ObjectStorages/MetadataStorageFromDiskTransactionOperations.cpp
+++ b/src/Disks/ObjectStorages/MetadataStorageFromDiskTransactionOperations.cpp
@@ -1,5 +1,4 @@
 #include <Disks/ObjectStorages/MetadataStorageFromDiskTransactionOperations.h>
-#include <Disks/ObjectStorages/MetadataStorageFromDiskTransactionOperations.h>
 #include <Disks/ObjectStorages/MetadataStorageFromDisk.h>
 #include <Disks/IDisk.h>
 #include <Common/getRandomASCIIString.h>
diff --git a/tests/integration/test_concurrent_backups_s3/test.py b/tests/integration/test_concurrent_backups_s3/test.py
index ed8edbc77d4..b1f41f04b99 100644
--- a/tests/integration/test_concurrent_backups_s3/test.py
+++ b/tests/integration/test_concurrent_backups_s3/test.py
@@ -14,6 +14,7 @@ node = cluster.add_instance(
     with_minio=True,
 )
 
+
 @pytest.fixture(scope="module")
 def start_cluster():
     try:
@@ -22,10 +23,11 @@ def start_cluster():
     finally:
         cluster.shutdown()
 
+
 def test_concurrent_backups(start_cluster):
     node.query("DROP TABLE IF EXISTS s3_test NO DELAY")
     columns = [f"column_{i} UInt64" for i in range(1000)]
-    columns_str = ', '.join(columns)
+    columns_str = ", ".join(columns)
     node.query(
         f"CREATE TABLE s3_test ({columns_str}) Engine=MergeTree() ORDER BY tuple() SETTINGS storage_policy='s3';"
     )