EXHIBIT 5.1

              Opinion of Malizia, Spidi, Sloane & Fisch, P.C. as to
                the validity of the Common Stock being registered




                      MALIZIA, SPIDI, SLOANE & FISCH, P.C.
                                ATTORNEYS AT LAW
                               1301 K STREET, N.W.
                                 SUITE 700 EAST
                             WASHINGTON, D.C. 20005
                                 (202) 434-4660
                            FACSIMILE: (202) 434-4661

                                                     WRITER'S DIRECT DIAL NUMBER
                                                             (202) 434-4660


September 15, 1998

Board of Directors
FSF Financial Corp.
201 Main Street South
Hutchinson, Minnesota 55350

         RE:      Registration Statement on Form S-8:
                  ----------------------------------
                  FSF Financial Corp. 1998 Stock Compensation Plan

Board Members:

         We have acted as special  counsel to FSF Financial  Corp.,  a Minnesota
corporation  (the  "Company"),   in  connection  with  the  preparation  of  the
Registration  Statement on Form S-8 to be filed with the Securities and Exchange
Commission (the  "Registration  Statement") under the Securities Act of 1933, as
amended,  relating to 300,000  shares of common stock,  par value $.10 per share
(the  "Common  Stock") of the Company  which may be issued upon the  exercise of
options granted or which may be granted under the FSF Financial Corp. 1998 Stock
Compensation  Plan (the  "Plan"),  as more fully  described in the  Registration
Statement.  You have  requested the opinion of this firm with respect to certain
legal aspects of the proposed offering.

         We have examined such documents, records, and matters of law as we have
deemed  necessary for purposes of this opinion and based thereon,  we are of the
opinion  that the Common  Stock when issued  pursuant to the exercise of options
granted  under  and in  accordance  with the  terms of the Plan will be duly and
validly issued, fully paid, and nonassessable.

         We hereby  consent to the  filing of this  opinion as an exhibit to the
Registration  Statement and to references to our firm included under the caption
"Legal Opinion" in the Prospectus which is a part of the Registration Statement.

                                            Sincerely,

                                            /s/ Malizia, Spidi, Sloane & Fisch

                                            Malizia, Spidi, Sloane & Fisch, P.C.