Matchstick challenge 99% of people can't answer

The matchsticks are arranged in the equation 6 - 4 = 3 as shown below. Use your intelligence to change one matchstick to create the correct equation.

Note, you must not break, throw, stack matches or edit matches in subtraction (-) or equal sign (=).

Hurry up and register yourself in the group of smartest people by leaving your answer in the comment box!

Trung Temple