 that "[d]efective allegations of jurisdiction may be amended, upon terms, in the trial or appellate courts." 00 U.S.C. § 0000. Although the defect in [plaintiff's] allegations must be cured by supplemental pleading, instead of amended pleading, the statutory purpose of avoiding needless sacrifice to defective pleading applies equally to this case.... Despite [plaintiff's] failure to supplement the complaint, the District Court was aware that he had filed his application; since the Secretary stipulated that the application had been filed, the defect in the pleadings surely did not prejudice him. Mathews, 000 U.S. at 00 n. 0, 00 S.Ct. at 0000 n. 0 (citations omitted)