Multiple use of named parameter doesn't work

In the example in the documentation http://doctrine-dbal.readthedocs.org/en/2.0.x/reference/data-retrieval-and-manipulation.html#dynamic-parameters-and-prepared-statements there is the following example:

$sql = "SELECT * FROM users WHERE name = :name OR username = :name";
$stmt = $conn->prepare($sql);
$stmt->bindValue("name", $name);
$stmt->execute();

When I try this example using pdo_sqlsrv I get the following error:
PDOException: SQLSTATE[07002]: [Microsoft][SQL Server Native Client 11.0]COUNT field incorrect or syntax error

When I use instead the parameters name1 and name2 the query works as expected.