SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                   FORM 10-K/A
                                 Amendment No.1

          (Mark One)

                |X| Annual Report Pursuant to Section 13 or 15(d)
                     of the Securities Exchange Act of 1934

                  For the fiscal year ended September 30, 2003

                                       or

             |_| Transition Report Pursuant to Section 13 or 15(d)
                     of the Securities Exchange Act of 1934

                         Commission file number 0-15235

                               MITEK SYSTEMS, INC.
             (Exact name of registrant as specified in its charter)

          Delaware                                       87-0418827
(State or other jurisdiction of              (I.R.S Employer Identification No.)
incorporation or organization)

                  14145 Danielson St., Suite B, Poway, CA 92064
               (Address of principal executive offices) (Zip Code)

                           (858) 513-4600 Registrant's
                      telephone number, including area code

                                      None
           Securities registered pursuant to Section 12(b) of the Act

                     Common Stock, par value $.001 per share
           Securities registered pursuant to Section 12(g) of the Act

      Indicate by check mark whether the registrant: (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes |X|  No |_|

      Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K.

      Indicate by check mark whether the registrant is an accelerated filer (as
defined in Rule 12b-2 of the Act) Yes |_|  No |X|.

      The aggregate market value of voting stock held by non-affiliates of the
registrant was $8,632,803 as of March 31, 2003 (computed by reference to the
last sale price of a share of the registrant's Common Stock on that date as
reported by NASDAQ).

      There were 11,308,537 shares outstanding of the registrant's Common Stock
as of December 3, 2003.

      Documents incorporated by reference in this report: Part II incorporates
certain information by reference from the Annual Report to Stockholders for the
year ended September 30, 2003. Part III incorporates certain information by
reference from the Proxy Statement for the 2004 Annual Meeting of Stockholders.


                              MITEK SYSTEMS, INC.

                                   FORM 10-K

                  For The Fiscal Year Ended September 30, 2003


                                     Part IV

Item 15  Exhibits, Financial Statement Schedules and Reports on Form 8-K..... 3
         Signatures.......................................................... 5


                                     Page 2


                                EXPLANATORY NOTE

      On December 30, 2003, Mitek Systems, Inc. ("Mitek") filed its Annual
Report on Form 10-K for the fiscal year ended September 30, 2003 (the "2003
10-K"). Mitek hereby amends the 2003 10-K to show the original auditor's consent
as executed which was inadvertently originally filed without showing it was
executed. The auditor's consent was not reissued for this amendment. No other
amendments are or were made to the 2003 10-K.

                                     PART IV

ITEM 15. EXHIBITS, FINANCIAL STATEMENTS, SCHEDULES, AND REPORTS ON FORM 8-K

      (a) (1) The following documents are included in the Company's Annual
Report to Stockholders for the year ended September 30, 2003:

            Independent Auditors' Report

            Balance Sheets -
                  As of
                  September 30, 2003 and 2002

            Statements of Operations -
                  For the Years Ended
                  September 30, 2003, 2002, and 2001

            Statements of Stockholders' Equity -
                  For the Years Ended
                  September 30, 2003, 2002, and 2001

            Statements of Cash Flows -
                  For the Years Ended
                  September 30, 2003, 2002, and 2001


                                     Page 3


            Notes to Financial Statements -
                  For the years Ended
                  September 30, 2003, 2002, and 2001

            With the exception of the financial statements listed above and the
            other information incorporated by reference herein, the Annual
            Report to Stockholders for the fiscal year ended September 30, 2003,
            is not to be deemed to be filed as part of this report.

      (a) (2) Exhibits:

      3.1   Certificate of Incorporation of Mitek Systems of Delaware Inc. (now
            Mitek Systems, Inc.), a Delaware corporation, as amended (1)

      3.2   Bylaws of Mitek Systems, Inc. as Amended and Restated (1)

      10.1  1986 Stock Option Plan (2)

      10.2  1988 Non Qualified Stock Option Plan (2)

      10.3  1996 Stock Option Plan(3)

      10.4  1999 Stock Option Plan (4)

      10.5  401(k) Plan (2)

      13.   Annual Report to Stockholders for the year ended September 30,
            2003 (5)

      23.   Independent Auditors' Consent

      31.1  Certification by Chief Executive Officer Pursuant to Section
            13a-14(a) of the Sarbanes-Oxley Act of 2002

      31.2  Certification by Chief Financial Officer Pursuant to Section
            13a-14(a) of the Sarbanes-Oxley Act of 2002

      32.1  Certification by Chief Executive Officer Pursuant to Section 906 of
            the Sarbanes-Oxley Act of 2002

      32.2  Certification by Chief Financial Officer Pursuant to Section 906 of
            the Sarbanes-Oxley Act of 2002


                                     Page 4



----------
(1)   Incorporated by reference from the exhibits to the Company' Annual Report
      on Form 10-K for the fiscal year ended September 30, 1985

(2)   Incorporated by reference from the exhibits to the Company's Registration
      Statement on Form SB-2 originally filed with the SEC on July 9, 1996.

(3)   Incorporated by reference from the exhibits to the Company's Registration
      Statement on Form 10-K for the fiscal year ended September 30, 2001.

(4)   Incorporated by reference to the exhibits to the Company's Registration
      Statement on Form S-8 originally filed with the SEC on June 10, 1999.

(5)   Incorporated by reference from the Company's Annual Report on Form 10-K
      for the fiscal year ended September 30, 2003.

      Upon request, the Registrant will furnish a copy of any of the listed
      exhibits for $0.50 per page.

      (b)   The following is a list of Current Reports on Form 8-K filed by the
            Company during the last quarter of the fiscal year ended September
            30, 2003:

      Form 8-K filed with the Securities and Exchange Commission on July 23,
2003, under Item 7 and Item 9 announced Mitek Systems, Inc's preliminary
financial results for the third fiscal quarter ended June 30, 2003.

      Form 8-K filed with the Securities and Exchange Commission on July 29,
2003, under Item 7 and Item 9 announced Mitek Systems, Inc.'s financial results
for the third fiscal quarter ended June 30, 2003.


SIGNATURES

      Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, as amended, the Registrant has duly caused this report to
be signed on its behalf by the undersigned, thereunto duly authorized.

Dated: February 3, 2005                 MITEK SYSTEMS, INC.


                                        By: /s/ James B. DeBello
                                           -------------------------------------
                                           James B. DeBello,
                                           President, Chief Executive Officer


                                     Page 5