CurrencyShares Australian Dollar Trust (NYSEArca: FXA) was down nearly 1% Tuesday morning after the central bank cut a key interest rate to the lowest level in a half-century.

The Reserve Bank of Australia lowered the official cash rate to 2.75% in a move that wasn’t widely expected.

“It is the seventh time the RBA has lowered rates since November 2011 in its effort to stimulate industries outside of the mining sector and offset the impact of the strong dollar which has traded above parity with its U.S. counterpart for almost a year,” the Financial Times reports.

FXA has fallen the past month. The Australian dollar is sensitive to commodities, which have also weakened recently. [Australian Dollar ETF Testing Key Resistance]