OPINION OF THE COURT

The mistake in this case is clear: the Board of Immigration Appeals reviewed the wrong order. An order of removal was initially entered against the alien in April 2002, based on his failure to appear at a scheduled hearing. (A. 22-26; A.R. 107-09.) However, the order was subsequently rescinded when the immigration judge determined that the alien had not been given notice of the proceeding. (A.28-30, 43, 45.) A second hearing was held in September 2002, at which the alien appeared, and a new order of removal was entered based on the immigration judge’s adverse credibility determination. (A.46-51.) The alien then appealed from that order. (A.R.102.) Unfortunately, the Board assumed that the order under review was the rescinded one, issued in April 2002. (A. 89; A.R. 2.) It affirmed based on the alien’s failure to appear, without addressing the adverse credibility determination on which the final order of removal, entered in September 2002, was based. (A. 89; A.R. 2, 102.) The alien now petitions for review.

We cannot affirm a decision of the Board on grounds other than those on which it relied. See, e.g., Li v. Attorney General, 400 F.3d 157, 163 (3d Cir. 2005). Since the Board failed to address the merits of the final order of removal, we are precluded from doing so. We will grant the petition for review and remand this case to the Board so that it may consider the order issued in September 2002.