Based solely on a review of copies of Forms 3, 4 and 5,
and amendments thereto, furnished to MFS California
Municipal Fund (the "Trust") with respect to its most
recent fiscal year for trustees and certain officers of the
Trust, directors and certain officers of MFS, certain
persons affiliated with MFS and greater than ten
percent beneficial owners, the Trust believes all Section
16(a) transactions were reported on timely basis, except
that there was a late Form 3 filing on behalf of Geoffrey
Schechter. The Form 3 was inadvertently originally filed
under the wrong CIK number on July 3, 2007. The Form
3 was promptly filed with the correct CIK number for
the Trust upon discovery of this error on January 11,
2018.