diff --git a/tests/integration/test_grpc_protocol_ssl/test.py b/tests/integration/test_grpc_protocol_ssl/test.py
index d5a36b53003..80599126dcf 100644
--- a/tests/integration/test_grpc_protocol_ssl/test.py
+++ b/tests/integration/test_grpc_protocol_ssl/test.py
@@ -4,7 +4,7 @@ import sys
 import grpc
 from helpers.cluster import ClickHouseCluster, run_and_check
 
-# The test cluster is configured with certificate for that host name, see 'server-cert.pem'.
+# The test cluster is configured with certificate for that host name, see 'server-ext.cnf'.
 # The client have to verify server certificate against that name. Client uses SNI
 SSL_HOST = "integration-tests.clickhouse.com"
 GRPC_PORT = 9100