AMENDMENT ONE TO SUBADVISORY AGREEMENT

Schedule A of the Subadvisory Agreement between RiverSource Investments, LLC
("RiverSource Investments") and Davis Selected Advisers, L.P. ("Subadviser")
dated March 1, 2006 is hereby amended effective April 24, 2006, to add
RiverSource Variable Portfolio-Fundamental Value Fund to Schedule A.

     Compensation pursuant to Paragraph 4 of the Subadvisory Agreement shall be
     calculated in accordance with the following schedule, with respect to
     assets that are subject to the Subadviser's investment discretion in the
     following fund:

     For the combined assets of:
     For RiverSource Fundamental Value Fund (formerly AXP Partners Fundamental
     Value Fund), a series of RiverSource Managers Series, Inc. (formerly AXP
     Partners Series, Inc.)(agreement between the Fund and RiverSource
     Investments dated March 1, 2006), and

     RiverSource Variable Portfolio-Fundamental Value Fund, a series of
     RiverSource Variable Portfolio-Managers Series, Inc. (formerly AXP Variable
     Portfolio-Partners Series, Inc.) (agreement between the Fund and
     RiverSource Investments dated March 1, 2006)

                Average Daily Net Assets*                     Rate
                ----------------------------------------------------
                First $100 million                            0.45bp
                $100 million-$500 million                     0.40bp
                $500 million-$1 billion                       0.30bp
                Over $1 billion                               0.25bp

     *Applies to average daily net assets that are subject to the Subadvisor's
     investment discretion.

In witness whereof, the parties have caused this Amendment to be executed by
their officers designated below.

RIVERSOURCE INVESTMENTS, LLC                DAVIS SELECTED
                                            ADVISERS, L.P.



By: /s/  Paula R. Meyer                     By: /s/  Thomas Tays
    --------------------                        -----------------
           Signature                                  Signature

         Paula R. Meyer                              Thomas Tays
         Senior Vice President                       Vice President