¶1OPINION
¶2On March 7, 1978, the last day for filing nomination petitions for the 1978 primary election, appellant submitted to the Secretary of the Commonwealth a petition entitled “Nomination Petition for the Office of Representative in Congress” containing 237 signatures. The petition appeared to be in order except that in the body of the introduction to the petition, appellant erroneously stated that the petition *249was for the “189th” congressional district rather than for the “1st” congressional district.
¶3On March 10, 1978, appellant received a letter from the Commissioner of Elections stating that said petition was rejected because the petition, by erroneously stating that it was for the “189th” congressional district rather than the “1st” congressional district, contained a “material error”.
¶4Appellant attempted to secure judicial relief from a Philadelphia Municipal Court judge wherein the judge drew two lines through the numerals “189th” as they appeared on the petition and inserted in print the word “First”. Appellant attempted to file the corrected petition with the Secretary of the Commonwealth; however, the petition was again rejected.
¶5Appellant then filed a complaint in mandamus in Commonwealth Court, seeking an order from said court directing the Secretary of the Commonwealth to accept his nomination petition as if timely filed and to place his name on the ballot in the 1978 primary election as a candidate for the Democratic nomination for representative to the United States Congress from the first congressional district. Commonwealth Court dismissed appellant’s complaint. Appellant now appeals that dismissal.
¶6We hold appellant’s error of placing “189th” instead of “1st” on his nomination petition was not a “material error”. The signers of appellant’s petition could not have been misled by said error into thinking that appellant was run*250ning for a seat in the state assembly rather than for a seat in the United States Congress since the petition consistently referred to “Congress” in bold print — never did the words “assembly” or “legislature” appear on the petition. Since appellant’s error was not “material”, the Secretary of the Commonwealth should have accepted appellant’s nomination petition.
¶7The order of the Commonwealth Court is reversed and the Secretary of the Commonwealth is ordered to accept appellant’s nomination petition as if it was timely filed.
¶8. The “1st” congressional district includes within its boundaries the “189th” state assembly district. There is no “189th” congressional district.
¶9. The Pennsylvania Election Code, Act of June 3, 1937, P.L. 1333, art. IX, § 976, as amended, 25 P.S. 2936 (1977-78 Supp.) provides that “no nomination petition . . shall be permitted to be filed if — (a) it contains material errors or defects apparent on the face thereof . . .”