diff --git a/src/Client/ClientBase.cpp b/src/Client/ClientBase.cpp
index 9cc9ffb7b98..599751a526c 100644
--- a/src/Client/ClientBase.cpp
+++ b/src/Client/ClientBase.cpp
@@ -296,6 +296,9 @@ ClientBase::ClientBase(
     , std_out(out_fd_)
     , progress_indication(output_stream_, in_fd_, err_fd_)
     , progress_table(output_stream_, in_fd_, err_fd_)
+    , in_fd(in_fd_)
+    , out_fd(out_fd_)
+    , err_fd(err_fd_)
     , input_stream(input_stream_)
     , output_stream(output_stream_)
     , error_stream(error_stream_)
diff --git a/src/Client/ClientBase.h b/src/Client/ClientBase.h
index 6b1a5172901..b31a690df1e 100644
--- a/src/Client/ClientBase.h
+++ b/src/Client/ClientBase.h
@@ -404,6 +404,10 @@ protected:
     std::atomic_bool cancelled = false;
     std::atomic_bool cancelled_printed = false;
 
+    int in_fd = STDIN_FILENO;
+    int out_fd = STDOUT_FILENO;
+    int err_fd = STDERR_FILENO;
+
     /// Unpacked descriptors and streams for the ease of use.
     std::istream & input_stream;
     std::ostream & output_stream;
diff --git a/tests/integration/test_ssh/test.py b/tests/integration/test_ssh/test.py
index b60f1922519..586e4195f59 100644
--- a/tests/integration/test_ssh/test.py
+++ b/tests/integration/test_ssh/test.py
@@ -1,6 +1,8 @@
-import subprocess
-import pytest
 import os
+import subprocess
+
+import pytest
+
 from helpers.cluster import ClickHouseCluster
 
 cluster = ClickHouseCluster(__file__)