diff --git a/doc/kimmer-sql/contains.md b/doc/kimmer-sql/contains.md
index c5638ab..d6ea051 100644
--- a/doc/kimmer-sql/contains.md
+++ b/doc/kimmer-sql/contains.md
@@ -135,7 +135,7 @@ public val Table<Book, UUID>.`authors?`: Table<Author, UUID>   // δ
 1. *α* and *β*, the collection join *Book::authors* is allowed to be used by subqueries.
 2. *γ* and *δ*, the collection join *Book::authors* is allowed to be used by top level queries.
 
-When *kimmer.table.collection-join-only-for-sub-query* is false, the source code generated by kimmer-ksp is
+When *kimmer.table.collection-join-only-for-sub-query* is true, the source code generated by kimmer-ksp is
 ```kt
 public val SubQueryTable<Book, UUID>.authors: NonNullSubQueryTable<Author, UUID>
   get() = joinList(Book::authors)