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                               INDEX TO EXHIBITS
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Exhibit
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 99.1        Press Release dated September 1, 1998




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                                                              Exhibit 99.1

FOR IMMEDIATE RELEASE
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FOR:        MAF Bancorp, Inc.                      Westco Bancorp, Inc.
            55th Street & Holmes Avenue            2121 South Mannheim Road
            Clarendon Hills, Il 60514              Westchester, IL 60154

CONTACT:    Allen H. Koranda, Chairman             David C. Burba, Chairman
              and Chief Executive Officer            and President

            Jerry A. Weberling, EVP and            Richard A. Brechlin, EVP and
              Chief Financial Officer                Treasurer
            (630) 887-5999                         (708) 865-1100

            Michael Janssen, SVP
            (630) 986-7544


           MAF BANCORP AND WESTCO BANCORP ANNOUNCE STOCK REPURCHASE
          PROGRAMS AND CHANGE IN ACCOUNTING TREATMENT OF ACQUISITION

      Clarendon  Hills,  Illinois,   September  1,  1998  -  MAF  Bancorp,  Inc.
(NASDAQ:MAFB),  announced today that its Board of Directors has approved a stock
repurchase  plan under  which the  Company is  authorized  to  repurchase  up to
1,250,000  shares of its common stock.  The shares to be  repurchased  represent
approximately 5.5% of the Company's current outstanding shares.  Westco Bancorp,
Inc. (NASDAQ:WCBI) also announced today that its Board of Directors has approved
a  stock   repurchase   program   covering   150,000  shares  which   represents
approximately 6% of the current outstanding shares of Westco.

      On August 17, 1998, MAF Bancorp  announced it had agreed to acquire Westco
in a fixed exchange ratio transaction in which each share of Westco common stock
will be  exchanged  for 1.395  shares of MAF  common  stock.  As a result of the
repurchase  programs,  the  acquisition  of Westco  will be  accounted  for as a
purchase transaction for financial accounting purposes, rather than as a pooling
of interests as previously announced.  The definitive  acquisition agreement has
been amended to reflect this change in accounting treatment.

      Using purchase accounting  treatment for the acquisition,  MAF will not be
required to record merger-related costs and restructuring charges in the quarter
in which the transaction closes as previously  announced.  Instead, such charges
will  increase  the goodwill  amortization  expense in future  periods.  MAF had
previously  estimated  that after-tax  merger-related  charges in the pooling of
interests  transaction would have been approximately  $5.0 million.  As amended,
the  transaction  will be  accretive to stated book value per share and modestly
dilutive  to  tangible book  value per  share,  assuming completion of the stock
repurchase  programs.  MAF expects that the transaction will




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be immediately  accretive to cash earnings per share, with only nominal dilution
to 1999 reported  earnings per share, and that it will be accretive  to reported
earnings  per share  thereafter,  in each case  assuming completion of the stock
repurchase programs.

      As of June 30, 1998,  Westco  Bancorp,  Inc.,  including  its wholly owned
subsidiary,  First Federal  Savings and Loan  Association  of  Westchester,  had
approximately  $320 million in assets,  $260 million in deposits and $50 million
in stockholders'  equity.  Westco operates one office and a drive-up facility in
Westchester,  IL. The common  stock of Westco  Bancorp,  Inc.,  is traded on the
Nasdaq Stock Market under the symbol WCBI.

      MAF is the parent company of Mid-America Bank, a federally chartered stock
savings bank  headquartered in Clarendon Hills, IL. At June 30, 1998 the Company
had assets of $3.6 billion, deposits of $2.4 billion and stockholders' equity of
$280 million. The Bank operates a network of 23 retail banking offices primarily
in Chicago and its western  suburbs.  The  Company's  common stock trades on the
Nasdaq Stock Market under the symbol MAFB.


                          Forward-Looking Information
                          ---------------------------

      STATEMENTS  CONTAINED IN THIS NEWS RELEASE THAT ARE NOT  HISTORICAL  FACTS
MAY CONSTITUTE  FORWARD-LOOKING STATEMENTS (WITHIN THE MEANING OF SECTION 21E OF
THE  SECURITIES  EXCHANGE  ACT OF 1934)  WHICH  INVOLVE  SIGNIFICANT  RISKS  AND
UNCERTAINTIES.  ACTUAL RESULTS MAY DIFFER  MATERIALLY FROM THE RESULTS DISCUSSED
IN THESE FORWARD-LOOKING STATEMENTS.  FACTORS THAT MIGHT CAUSE SUCH A DIFFERENCE
INCLUDE,  BUT ARE NOT LIMITED TO: (1) INABILITY TO REALIZE COST SAVINGS FROM THE
MERGER TO THE FULL EXTENT EXPECTED OR WITHIN THE EXPECTED TIME FRAME;  (2) LOWER
THAN EXPECTED REVENUES  FOLLOWING THE MERGER;  (3) INABILITY OF MAF OR WESTCO TO
COMPLETE  THE  ANNOUNCED  STOCK  REPURCHASE  PROGRAMS  WITHIN  THE  CONTEMPLATED
TIMEFRAME  OR STOCK PRICE  RANGES;  (4)  SIGNIFICANT  INCREASES  IN  COMPETITIVE
PRESSURES  AMONG  DEPOSITORY  INSTITUTIONS;  (5) HIGHER THAN  EXPECTED  COSTS OR
DIFFICULTIES  RELATED TO THE INTEGRATION OF THE BUSINESS OF WESTCO;  (6) CHANGES
IN THE INTEREST RATE  ENVIRONMENT  THAT RESULT IN REDUCED INTEREST RATE MARGINS;
(7)  DETERIORATION OF GENERAL ECONOMIC  CONDITIONS,  EITHER NATIONALLY OR IN THE
COMPANY'S  MARKET AREA; AND (8) ADOPTION OF  LEGISLATION  OR REGULATORY  CHANGES
THAT ADVERSELY AFFECT THE BUSINESS OF THE COMBINED COMPANY.