Karim Benzema's goal against Alaves means Real Madrid's record goalscoring streak has reached 50 matches in all competitions.
The striker converted Dani Carvajal's cross in the 31st minute at Santiago Bernabeu, giving Zinedine Zidane's side the lead in Sunday's La Liga encounter.
An emphatic finish late on from Isco doubled the advantage for Madrid, who remain at the top of La Liga over Barcelona.
The last team to stop Madrid scoring were Manchester City in the first leg of their Champions League semi-final tie last season.
The incredible run, which is nearing one year in duration, is already the best ever scoring streak recorded by a LaLiga club.