Illegal mix of collations error in MySql

Question

Just got this answer from a previous question and it works a treat!

SELECT username, (SUM(rating)/COUNT(*)) as TheAverage, Count(*) as TheCount 
FROM ratings         


        

Answer 1

HAvING TheCount > 4 AND username IN (SELECT username FROM users WHERE gender=1)

but why i am answering, you dont voted me as right answer :)