A prominent Eustachian valve in the right atrium has been reported to pose significant challenges during device closure of atrial septal defects. We describe the procedural aspects of device closure in an ASD with deficient rims and a redundant Eustachian valve. The prominent Eustachian valve provided extra stability in the anteroinferior aspect during device deployment and hence proved to be helpful for the procedure. It is important to consider this aspect while planning device closure