diff --git a/store/db/postgres/memo.go b/store/db/postgres/memo.go
index 84fb96b8..a4d89f38 100644
--- a/store/db/postgres/memo.go
+++ b/store/db/postgres/memo.go
@@ -226,7 +226,8 @@ func (d *DB) DeleteMemo(ctx context.Context, delete *store.DeleteMemo) error {
 
 func vacuumMemo(ctx context.Context, tx *sql.Tx) error {
 	// First, build the subquery
-	subQuery, subArgs, err := squirrel.Select("id").From("user").PlaceholderFormat(squirrel.Dollar).ToSql()
+	// select from user is select the DB users, not the memos users.
+	subQuery, subArgs, err := squirrel.Select("id").From("public.user").PlaceholderFormat(squirrel.Dollar).ToSql()
 	if err != nil {
 		return err
 	}