EX-99.1.c


                            CERTIFICATE OF AMENDMENT
                                       OF
                       AGREEMENT AND DECLARATION OF TRUST
                                       OF
                          DELAWARE GROUP ADVISER FUNDS



     The  undersigned  Trustees  of Delaware  Group  Adviser  Funds,  a Delaware
statutory trust (the "Trust"),  constituting a majority of the Board of Trustees
of the Trust (the "Trustees"), do hereby certify:

     FIRST.  That pursuant to the  authority  granted to the Trustees in Article
VII,  Section 5 of the  Agreement  and  Declaration  of Trust of the Trust  (the
"Declaration of Trust"),  Article VII,  Section 2 of the Declaration of Trust is
hereby  amended by deleting the second  sentence of Section 2(a) in its entirety
and replacing it with the following sentence:

     The Trust,  out of Trust  Property,  shall indemnify and hold harmless each
     officer  and  Trustee of the Trust  from and  against  claims  and  demands
     arising out of or related to such officer's or Trustee's performance of his
     or her  duties as an  officer  or  Trustee  of the  Trust,  subject  to the
     provisions set forth in Article VI of the By-Laws.

     SECOND.  That  the  above  amendment  to  Article  VII,  Section  2 of  the
Declaration of Trust is effective as of November 15, 2006.

     IN WITNESS  WHEREOF,  the  undersigned  Trustees of Delaware  Group Adviser
Funds, certify as to the above as of the 15th day of November, 2006.

/s/ Patrick P. Coyne                           /s/ Ann R. Leven
___________________________________            _________________________________
Patrick P. Coyne                               Ann R. Leven
Trustee                                        Trustee

/s/ Thomas L. Bennett                          /s/ Thomas F. Madison
___________________________________            _________________________________
Thomas L. Bennett                              Thomas F. Madison
Trustee                                        Trustee

/s/ John A. Fry                                /s/ Janet L. Yeomans
___________________________________            _________________________________
John A. Fry                                    Janet L. Yeomans
Trustee                                        Trustee

/s/ Anthony D. Knerr                           /s/ J. Richard Zecher
___________________________________            _________________________________
Anthony D. Knerr                               J. Richard Zecher
Trustee                                        Trustee

/s/ Lucinda S. Landreth
___________________________________
Lucinda S. Landreth
Trustee