¶1 OPINION
¶2 Ronald Sanford appeals the District Court’s order dismissing his petition filed pursuant to 28 U.S.C. § 2241. In his petition, Sanford alleged that the 123-month sentence imposed following his guilty plea for arson and mail fraud is invalid under United States v. Booker, 543 U.S. 220, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005). The District Court dismissed the petition for lack of jurisdiction. Sanford fried a timely notice of appeal, and we have jurisdiction under 28 U.S.C. § 1291.
¶3 Our review of the District Court’s decision is de novo. United States v. Cleary, 46 F.3d 307, 309-10 (3d Cir.1995). Sanford’s § 2241 petition may not be entertained unless a motion under § 2255 is “inadequate or ineffective to test the legality of his detention.” 28 U.S.C. § 2255. Sanford argued that his case falls within the exception set forth in In re Dorsainvil, 119 F.3d 245, 251 (3d Cir.1997). However, unlike the situation in In re Dorsainvil, the decision in Booker did not decriminalize the conduct for which Sanford was convicted. See Okereke v. United States, 307 F.3d 117, 120-21 (3d Cir.2002). We agree with the District Court that it lacked jurisdiction over Sanford’s § 2241 petition. See also Padilla v. United States, 416 F.3d 424 (5th Cir.2005).
¶4 Summary action is appropriate if there is no substantial question presented in the appeal. See Third Circuit LAR 27.4. For the above reasons, as well as those set forth by the District Court, we will summarily affirm the District Court’s order. See Third Circuit I.O.P. 10.6.