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MFS® Global Real Estate Fund | MFS® Global Real Estate Fund

MFS® Global Real Estate Fund

SUPPLEMENT TO PROSPECTUS

The date of this supplement is March 27, 2013.

MFS^® Global Real Estate Fund

Effective immediately, the sub-section entitled "Performance Table" within the sub-heading entitled “Performance Information” beneath the main heading "Summary of Key Information" is restated in its entirety as follows:

Performance Table.

Average Annual Total Returns (for the Periods Ended December 31, 2011)

Average Annual Returns MFS® Global Real Estate Fund	Label	Average Annual Returns, 1 Year	Average Annual Returns, Life	Average Annual Returns, Inception Date
B	B Shares Returns Before Taxes	(11.32%)	28.39%	Mar. 11, 2009
C	C Shares Returns Before Taxes	(8.69%)	29.07%	Mar. 11, 2009
I	I Shares Returns Before Taxes	(6.89%)	30.35%	Mar. 11, 2009
R1	R1 Shares Returns Before Taxes	(7.81%)	29.07%	Mar. 11, 2009
R2	R2 Shares Returns Before Taxes	(7.35%)	29.71%	Mar. 11, 2009
R3	R3 Shares Returns Before Taxes	(7.12%)	30.03%	Mar. 11, 2009
R4	R4 Shares Returns Before Taxes	(6.89%)	30.35%	Mar. 11, 2009
R5	R5 Shares Returns Before Taxes	(6.89%)	30.35%	Mar. 11, 2009
A	A Shares Returns Before Taxes	(12.55%)	27.30%	Mar. 11, 2009
After Taxes on Distributions A	A Shares Returns After Taxes on Distributions	(13.61%)	20.31%
After Taxes on Distributions and Sale of Fund Shares A	A Shares Returns After Taxes on Distributions and Sale of Fund Shares	(7.46%)	19.97%
FTSE EPRA/NAREIT Developed Real Estate Index	Index Comparison (Reflects no deduction for fees, expenses or taxes) FTSE EPRA/NAREIT Developed Real Estate Index	(5.82%)	33.50%	Mar. 11, 2009

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your own tax situation, and may differ from those shown. The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. The after-tax returns are shown for only one of the fund’s classes of shares, and after-tax returns for the fund’s other classes of shares will vary from the returns shown.

- Definition

If the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also should show the returns of an appropriate broad-based securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____)

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