Guinea midfielder Ilaix Moriba broke his La Liga and Barcelona duck with the second goal in their 2-0 victory over Osasuna on Saturday.
The Conakry-born youngster replaced Sergio Busquets in the 67th minute for his third league appearance for Ronald Koeman's side and he capped it off with a memorable effort at the Estadio El Sadar.
Lionel Messi laid an assist for Ilaix Moriba to wrap up a crucial away win for Barcelona in the 83rd minute, after Jordi Alba opened the scoring in the 30th minute.
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He made his Barcelona debut in January during a Copa del Rey fixture Cornella and Saturday's strike made the teenager the youngest player to score from outside the box in La Liga this season, at the age of 18 years and 46 days.