diff --git a/tests/queries/0_stateless/02434_cancel_insert_when_client_dies.sh b/tests/queries/0_stateless/02434_cancel_insert_when_client_dies.sh
index 2e653f2f1a3..2a17095b267 100755
--- a/tests/queries/0_stateless/02434_cancel_insert_when_client_dies.sh
+++ b/tests/queries/0_stateless/02434_cancel_insert_when_client_dies.sh
@@ -40,6 +40,7 @@ export -f insert_data
 
 ID="02434_insert_init_${CLICKHOUSE_DATABASE}_$RANDOM"
 insert_data
+$CLICKHOUSE_CLIENT -q "system flush distributed dedup_dist"
 $CLICKHOUSE_CLIENT -q 'select count() from dedup_test'
 
 function thread_insert