diff --git a/tests/queries/0_stateless/01921_concurrent_ttl_and_normal_merges_zookeeper_long.sh b/tests/queries/0_stateless/01921_concurrent_ttl_and_normal_merges_zookeeper_long.sh
index 23df052a8d6..a29d0661621 100755
--- a/tests/queries/0_stateless/01921_concurrent_ttl_and_normal_merges_zookeeper_long.sh
+++ b/tests/queries/0_stateless/01921_concurrent_ttl_and_normal_merges_zookeeper_long.sh
@@ -1,6 +1,8 @@
 #!/usr/bin/env bash
 # Tags: long, zookeeper, no-parallel
 
+CLICKHOUSE_CLIENT_SERVER_LOGS_LEVEL=error
+
 CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
 # shellcheck source=../shell_config.sh
 . "$CURDIR"/../shell_config.sh