Further consolidating his rule, he marched on Shirvan, where Shirvanshah Ibrahim, a loyal Timurid vassal was still reigning. Combined forces of Constantine I, Ibrahim and Syed Ahmed Orlat (lord of Shaki) were defeated on Battle of Chalagan, 1412. He later revoked governorship of Soltaniyeh from Bistam Beg and bestowed it on Jahan shah in 1415.