This question already has an answer here:

Example, assassin rogue with the charlatan background, both the class and background specify the disguise kit as a proficiency. What do you do about that to even it out? With the second proficiency do you turn it into expertise? Or do you choose another kit to become proficient in? Or do you just lose out on a proficiency?


merged by mxyzplk Jan 29 '15 at 4:24

This question was merged with What happens if I get the same skill from both my background and my class? because it is an exact duplicate of that question.