The Aston Villa hitman came off after 75 minutes of his country's 2-0 friendly defeat in Brussels on Thursday evening, sparking fears that he might have aggravated a hip injury which forced him out for a few weeks earlier in the season.
However Wilmots confirmed that Benteke came off because his 15-minute experiment to play him in attack alongside Romelu Lukaku during the second half disappointed him greatly and he decided to make a change.
Benteke and Lukaku have nine Premier League goals between them for Villa and Everton respectively this season, but Wilmots told Het Nieuwsblad: "I wanted to try [the pairing], but I soon saw that nothing was going to happen.
"I am glad that you [media] could see that. That is why I took Benteke off."
The news will be a relief for Villa boss Paul Lambert and the club's fans as they will hope Benteke will be fit and ready to try and end his five-match goal drought when they face Midlands' rivals West Brom at the Hawthorns on Monday week.