VANGUARD(R) Fixed Income FUnds VANGUARD High-Yield Corporate Fund VANGUARD Long-Term Investment Grade Fund VANGUARD GNMA Fund Addendum to Wellington Management Company LLC Agreement DATED MAY 1, 2006 For Wellington Management Company LLC,an amended...

                    VANGUARD(R) Fixed Income FUnds

                    VANGUARD High-Yield Corporate Fund
                VANGUARD Long-Term Investment Grade Fund
                        VANGUARD GNMA Fund
                 Addendum to Wellington Management Company LLC
                       Agreement DATED MAY 1, 2006


For Wellington Management Company LLC,an amended agreement changes the
process for the quarterly calculation of asset-based fees. The calculations
now will be based on the average daily net assets managed by the advisor,
rather than the average month-end net assets.