As Lisa said, you need to amend. 

Although they will likely automatically fix it, it is possible that the taxpayer would need to specifically point out the amended forms to the Social Security Administration.

https://www.ssa.gov/forms/ssa-7008.pdf

However, the general rule is that a person only has 3 years to fix it (see first link below).  So years 4 and 5 probably can't be fixed now (but you can look if any exceptions apply, see second link below).

https://www.ssa.gov/OP_Home/cfr20/404/404-0802.htm

https://www.ssa.gov/OP_Home/cfr20/404/404-0822.htm