AMENDMENT TO FUND PARTICIPATION AGREEMENT
                             (INSTITUTIONAL SHARES)


         This Amendment to the Fund Participation Agreement ("Agreement") dated
May 1, 2003, as amended, between Janus Aspen Series, an open-end management
investment company organized as a Delaware business trust (the "Trust"), and
Jefferson National Life Insurance Company, a Texas life insurance company (the
"Company") is effective as of May 1, 2006.

                                    AMENDMENT
                                   -----------

         For good and valuable consideration, the receipt of which is hereby
acknowledged, the parties agree to amend the Agreement as follows:

         1. Schedule A of this Agreement shall be deleted and replaced with the
            attached Schedule A.

         2. All other terms of the Agreement shall remain in full force and
            effect.

         IN WITNESS WHEREOF, the parties have caused their duly authorized
officers to execute this Amendment as of the date and year first above written.


JEFFERSON NATIONAL LIFE
INSURANCE COMPANY


By:  ___________________________
Name:  Craig A. Hawley
Title: General Counsel & Secretary


JANUS ASPEN SERIES


By:  ___________________________
Name:
Title:



                                   SCHEDULE A
                                -----------------

                   SEPARATE ACCOUNTS AND ASSOCIATED CONTRACTS
                 ----------------------------------------------


         NAME OF SEPARATE ACCOUNT                    CONTRACTS FUNDED BY SEPARATE ACCOUNT
       ---------------------------                  --------------------------------------
                                                     
Jefferson National Life Annuity Account C               22-4025 (Individual)
                                                        32-4000 (Group)
Jefferson National Life Annuity Account E               22-4047/32-4003 (Achievement)
                                                        22-4048/32-4002 (Educator)
Jefferson National Life Annuity Account F               22-4061
Jefferson National Life Annuity Account G               22-4056; JNL-2300; JNL-2300-1
Jefferson National Life Annuity Account H               CVIC-2000 or -2001 (state specific)
Jefferson National Life Annuity Account I               CVIC-2004 or -2005 (state specific)
Jefferson National Life Annuity Account J               JNL-2100
Jefferson National Life Annuity Account K               JNL-2200
Jefferson National Life Account L                       CVIC-1001 and -1003