Confirm maturity
Look for mature-male features such as palpal bulbs and, in species that develop them, tibial hooks. Behaviour alone is not enough to sex a spider.
Feeding
Mature males often eat less. Offer food periodically, remove ignored prey and keep fresh water available.
Enclosure
Keep the lid/doors secure and fall height sensible because a roaming male may climb far more than he did as a juvenile.
When to check husbandry
If the spider is not mature, or roaming is combined with extreme heat, flooding or obvious substrate avoidance, inspect the enclosure conditions.