DELAWARE GROUP^® GOVERNMENT FUND

Delaware Emerging Markets Debt Fund

Supplement to the Statement of Additional Information dated November 28, 2016

DELAWARE GROUP^® INCOME FUNDS

Delaware Corporate Bond Fund

Delaware Extended Duration Bond Fund

Delaware High-Yield Opportunities Fund

Supplement to the Statement of Additional Information dated November 28, 2016

DELAWARE GROUP^® TAX FREE FUND

Delaware Tax-Free USA Fund

Delaware Tax-Free USA Intermediate Fund

VOYAGEUR MUTUAL FUNDS

Delaware National High-Yield Municipal Bond Fund

Supplement to the Statement of Additional Information dated December 29, 2016

DELAWARE GROUP STATE TAX-FREE INCOME TRUST

Delaware Tax-Free Pennsylvania Fund

VOYAGEUR INSURED FUNDS

Delaware Tax-Free Arizona Fund

VOYAGEUR INTERMEDIATE TAX FREE FUNDS

Delaware Tax-Free Minnesota Intermediate Fund

VOYAGEUR MUTUAL FUNDS

Delaware Minnesota High-Yield Municipal Bond Fund

Delaware Tax-Free California Fund

Delaware Tax-Free Idaho Fund

Delaware Tax-Free New York Fund

VOYAGEUR MUTUAL FUNDS II

Delaware Tax-Free Colorado Fund

VOYAGEUR TAX FREE FUNDS

Delaware Tax-Free Minnesota Fund

Supplement to the Statement of Additional Information dated December 29, 2016

DELAWARE GROUP^® GOVERNMENT FUND

Delaware Strategic Income Fund

Supplement to the Statement of Additional Information dated January 31, 2017

DELAWARE GROUP^® INCOME FUNDS

Delaware Floating Rate Fund

Supplement to the Statement of Additional Information dated January 31, 2017

DELAWARE GROUP^® ADVISER FUNDS

Delaware Diversified Income Fund

Delaware U.S. Growth Fund

Delaware Global Real Estate Opportunities Fund

Supplement to the Statement of Additional Information dated February 28, 2017

(each a "Fund" and collectively, the "Funds")

Effective immediately, the following replaces the first paragraph in each Fund's Statement of Additional Information section entitled "Purchasing Shares – Dealer's Commission":

For initial purchases of Class A shares of $1 million or more, a dealer's commission may be paid by the Distributor to financial intermediaries through whom such purchases are effected.

Please keep this Supplement for future reference.

This Supplement is dated August 22, 2017.