Sellas Tetteh is blotting out the joy of guiding Ghana to the final of the Under-20 World Cup as he prepares his team to meet Brazil.
Ghana has been fantastic up front having scored 16 times in six matches but allowed their opponents opportunities at the back on eight occasions.
The apparent frailty in the defence of the Black Satellites remains a major concern ahead of Friday's clash with the Seleção.
Brazil, in six matches just like Ghana have netted 14 goals and conceded just three times, a statistic which seems to suggest that the Seleção have held their backs tight.
But Sellas Tetteh says he was continuing to try and resolve the problems at the back.
"We're working towards that, slowly and cautiously - but as far as finishing clinically [is concerned] we are on course.
"We have more to do but the total outcome is so important and we won, so we look at our weaknesses and then we work on it," Sellas said.
Ghana will attempt to deliver Africa's first ever Under-20 World Cup title.
And Friday's final sets up a rematch of the 1993 final, which Brazil won 2-1 in Sydney.
This is third time Ghana have been to the final of this competition though the Black Satellites have never won the title.
