Terry picked up an injury during Monday's 4-2 win over Croatia but is certain he will recover in time to partner Sol Campbell in defence.
He said: "My knee locked up when I went for a header and I landed on one foot. But it is all OK - definitely.
"I don't think it's going to be a problem. I'm sure I will be fine."
England have no other fresh injury concerns ahead of their clash with the tournament hosts.
Nicky Butt is still sidelined by a knee injury but is continuing his good progress and could even be in contention to play - if England reach the semi-finals.