Benteke is still thought to be weeks away from fitness following a recent hip injury suffered against Norwich.
However, Belgium boss Wilmots has selected the big striker for his side's World Cup qualifiers against Croatia on October 11 and Wales on October 15 as his side seek the point they need to secure their spot next summer.
Wilmots has reportedly stated Benteke will not be risked for the Croatia match but, should they lose that and need a result against the Welsh, the striker is likely to be called upon.
When it was put to Lambert that he may be heading for a clash with his international counterpart, the Scot said: "No, I've spoken to Marc anyway and the medical people are engaged in good dialogue so there's no problems at all.
"But he's not fit for us this weekend.
"Christian is doing really well with his rehabilitation and we just have to wait and see how he's feeling. I've spoken to him every day, as I do with everybody else, and he's doing okay."
Villa beat Manchester City 3-2 at home without Benteke last Saturday to go some way to dispelling the myth that they are anything like a one-man team, but Lambert insists they never needed to make any sort of statement.
"The lads had nothing to prove to me," he said. "I knew we were up against one of the best teams in the country and that we had to play ever so well to try to get something from the game.
"Against City they had everything that you want from a footballer: The fight, hunger, desire, togetherness. Everything that makes a strong team, we had in abundance.