Import of table with (silly) name "index"

In Doctrine/Import/Mssql.php are this procedure calls:

92: $sql = 'EXEC sp_primary_keys_rowset @table_name = ' . $this->conn->quoteIdentifier($table, true);
99: $sql = 'EXEC sp_columns @table_name = ' . $this->conn->quoteIdentifier($table, true);
219: $query = 'EXEC sp_statistics @table_name = ' . $table;
222: $query = 'EXEC sp_pkeys @table_name = ' . $table;

which fail with sql "keyword" table names.

Using ...['. $table . ' ]' around the table name worked for me.
I don't know anything about the backend of doctrine.
Should this be done by quoteIdentifier, or is this fix okay?
.. @table_name = [' . $this->conn->quoteIdentifier($table, true) . ']';

Many thanx for all!
Jochen Bayer