Connecting with Firebird using QODBC driver

Hey,
i have created local firebird database that i want to connect with. Unfortunately I can't make the connection.
Here is my code:

Code:

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QString servername = "SYSDBA@localhost";
	QSqlDatabase db = QSqlDatabase::addDatabase("QODBC");
	db.setHostName(servername);	
	db.setDatabaseName("D:\\baza\\BAZA.FDB");	
	db.setUserName("SYSDBA");
	db.setPassword("masterkey");
	bool ok = db.open();
	qDebug() << ok;

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I would appreciate any help.
Greetings.