Standard & Poor's revised Metso's rating outlook to stable

Metso Corporation's stock exchange release on August 12, 2010 at 1:15 p.m. local time

Standard & Poor´s Ratings Services has affirmed Metso's BBB long-term credit
rating and changed the outlook from negative to stable. At the same time the
short-term corporate credit rating was raised to A-2 from A-3.

Metso is a global supplier of sustainable technology and services for mining,
construction, power generation, automation, recycling and the pulp and paper
industries. We have about 27,000 employees in more than 50 countries.

Further information, please contact:
Pekka Hölttä, Senior Vice President, Corporate Treasurer, Metso, tel. +358
20 484 3195

Metso Corporation

Olli Vaartimo
Executive Vice President and CFO

Johanna Henttonen
Vice President, Investor Relations

NASDAQ OMX Helsinki Ltd