Huddersfield's record-breaking 43-game unbeaten run came to an end as Charlton extended their lead at the head of League One to seven points with a 2-0 victory at The Valley.
Yann Kermorgant and Hogan Ephraim were on target in the first half and Lee Clark's side were unable to recover despite staging a second half rally.
Huddersfield remain outside the automatic promotion places after their first league defeat in 11 months but a sixth successive win for Chris Powell's Charlton tightened their grip on the division's promotion race.
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