The Croatian put the finishing touch on a fine move from Real to score their fourth and end any hopes of a comeback for Deportivo.
With 68 minutes gone, Cristiano Ronaldo teed up Modric with a sublime back-heel and the former Tottenham man accepted the invitation to try his luck.
Without breaking stride, Modric swept an effort past Ruben and into the bottom corner from 20 yards, much to the delight of his team-mates.
Check out the goal for yourself below:
21 January 2018