diff --git a/docs/en/sql-reference/statements/alter/column.md b/docs/en/sql-reference/statements/alter/column.md
index 4eb251b88cd..95c4cb6898c 100644
--- a/docs/en/sql-reference/statements/alter/column.md
+++ b/docs/en/sql-reference/statements/alter/column.md
@@ -212,6 +212,9 @@ SET mutations_sync = 2;
 CREATE TABLE tmp (x Int64) ENGINE = MergeTree() ORDER BY tuple() PARTITION BY tuple();
 INSERT INTO tmp SELECT * FROM system.numbers LIMIT 10;
 ALTER TABLE tmp ADD COLUMN s String MATERIALIZED toString(x);
+
+ALTER TABLE tmp MATERIALIZE COLUMN s;
+
 SELECT groupArray(x), groupArray(s) FROM tmp;
 ```