Divock Origi found the target for Belgium on Wednesday evening as they warmed up for an important qualifier against Wales this weekend by beating Iceland 3-1 in Brussels.
The on-loan Liverpool striker rose from the substitutes' bench at half-time and required just 17 minutes to restore his country's advantage in the friendly match with a powerful drive from the edge of the area.
Nicolas Lombaerts' opener had previously been levelled by Alfred Finnbogason, before Romelu Lukaku further extended the home side's lead and sealed the result.
Simon Mignolet was an unused substitute throughout the tie, which served as preparation for a meeting with Wales - and fellow Reds Joe Allen and Danny Ward - in Euro 2016 qualifying on Sunday.
Meanwhile, midfielder Philippe Coutinho featured for the final 17 minutes as Brazil eased to a 4-0 friendly victory in Turkey.
The 22-year-old has re-established himself as part of the South Americans' squad in recent months, and was introduced to the action in the closing stages in Istanbul.
By then, the win had long been secured for Dunga's team with four unanswered efforts. Neymar scored twice, sandwiching an own goal and a strike from Willian.
Next up for Brazil and Coutinho during this international period is another friendly encounter in Europe - they face Austria next Tuesday, November 18.