San Francisco 49ers tight end-defensive tackle Demarcus Dobbs was taken off the reserve/suspended list and added to the active roster, the team announced Tuesday.
To make room on the roster, fullback-defensive tackle Will Tukuafu was waived.
Dobbs was suspended in August for the season opener by the NFL for a violation of the league's substance abuse policy. He was eligible to return to the roster this week.
Dobbs, 25, has played for the 49ers since 2011, seeing action in 15 games. During training camp, he worked as a backup defensive end.
He was arrested in November for possession of marijuana after a single-car accident in Santa Clara, Calif., but it was unclear whether the suspension was related to the incident.
Tukuafu joined the 49ers in December 2010 as an undrafted free agent and played in 18 games the past two seasons on offense, defense and special teams. He had 15 tackles and a fumble recovery.
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