Microsoft Word 10.0.4219; CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statements on Form S-8 (Registration No. 33-84340 and Registration No. 33-47891 and Registration No. 333-85182) of MFB Corp. of our report dated November 17, 2004 which is incorporated by reference in this Annual Report on Form 10-K of MFB Corp. for the year ended September 30, 2004. Crowe Chizek and Company LLC South Bend, Indiana December 14, 2004