He finally made his debut in the friendly match against Finland on 9 February 2011 in Ghent .
On 1 October 2010 , Mertens was called up for the Euro 2012 Qualifying Matches against Kazakhstan and Austria by Belgian national team coach , Georges Leekens .
Mertens finally made Mertens ' debut in the friendly match against Finland on 9 February 2011 in Ghent .
On 1 October 2010 , Mertens was called up for the Euro 2012 Qualifying Matches against Kazakhstan and Austria by Belgian national team coach , Georges Leekens .