As teacher what would you do if a student corrects you in the class Or correct your mistakes in front of students?

As a teacher I should be enriched with up to date information  on the topic/s that I handle in the class. However, in case of any lacuna in my knowledge updation and a student of mine corrects me during my class, it is a good indication that my student is listening to what I teach, I appreciate him  for his updated knowledge and at the same time I will be more cautious about my updation of knowledge in the subject.