diff --git a/src/Client/Connection.cpp b/src/Client/Connection.cpp
index 64d1f102fdb..c7dea787543 100644
--- a/src/Client/Connection.cpp
+++ b/src/Client/Connection.cpp
@@ -75,7 +75,6 @@ namespace ErrorCodes
     extern const int SUPPORT_IS_DISABLED;
     extern const int BAD_ARGUMENTS;
     extern const int EMPTY_DATA_PASSED;
-    extern const int CANNOT_READ_ALL_DATA;
 }
 
 Connection::~Connection()
diff --git a/tests/integration/test_settings_from_server/test.py b/tests/integration/test_settings_from_server/test.py
index 118286c1650..39f750a36ac 100644
--- a/tests/integration/test_settings_from_server/test.py
+++ b/tests/integration/test_settings_from_server/test.py
@@ -16,6 +16,7 @@ node_no_send = cluster.add_instance(
     user_configs=["configs/users.d/users.xml"],
 )
 
+
 @pytest.fixture(scope="module")
 def started_cluster():
     try: