Exhibit 1(b)

                            CERTIFICATE OF AMENDMENT
                                       TO
                    AMENDED AND RESTATED DECLARATION OF TRUST
                                       OF
                          PAINEWEBBER INVESTMENT TRUST

         The undersigned, being Vice President and Secretary of PaineWebber
Investment Trust ("Trust"), hereby certifies that the Trustees of the Trust duly
adopted the following resolution, which amended the Amended and Restated
Declaration of Trust in the manner provided in such Amended and Restated
Declaration of Trust, at a meeting held on May 9, 2001, and that the amendment
will be effective on June 4, 2001.

                  RESOLVED, that the Amended and Restated Declaration of Trust
         dated February 11, 1998 be, and it hereby is, amended to change the
         name of the Trust from "PaineWebber Investment Trust" to "Brinson
         Investment Trust" in the following manner:

                  Section 1.1 of Article I of the Amended and Restated
                  Declaration of Trust is hereby amended to read as follows:

                           SECTION 1.1.     NAME.  This name of the trust
                  created hereby is "Brinson Investment Trust."


                           Section 1.2(q) of Article I of the Amended and
                  Restated Declaration of Trust is hereby amended to read as
                  follows:

                           SECTION 1.2

                           (q)    "Trust" means Brinson Investment Trust.

                  Schedule A of the Amended and Restated Declaration of Trust is
                  hereby amended to read as follows:

                           SERIES OF THE TRUST

                           Brinson Tactical Allocation Fund



Dated: May 10, 2001
                                                     /S/ AMY R. DOBERMAN
                                                 -----------------------------
                                                        Amy R. Doberman
                                                  Vice President and Secretary


New York, New York (ss)

On this 10th day of May, 2001, before me personally appeared Amy R. Doberman, to
me personally known, who, being by me duly sworn, did say that she is Vice
President and Secretary of the above-referenced Trust and acknowledged that she
executed the foregoing instrument as her free act and deed.


                                                   /S/ CRISTINA PARADISO
                                               -----------------------------
                                                       Notary Public