Portugal coach Fernando Santos is adamant Friday's 0-0 Euro 2020 qualifying draw with Ukraine will give his team "more strength" for their next outing against Serbia.
The reigning European champions had Cristiano Ronaldo back in contention after his post-World Cup hiatus, but even he could not inspire Santos' men.
The match was Ronaldo's first since Portugal fell to Uruguay in the World Cup Round of 16 with a number of younger options taking the reigns as the forward focused on his move to Juventus.
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It was the hosts who generally controlled proceedings in Lisbon, but they failed to break down their stubborn visitors and it marks an underwhelming start to their Group B campaign.