No deferrals taken from bonuses for 5 years - which correction program

[John A]

An employer did not take 401(k) deferrals out of bonuses for at least 5 years. The plan document did not exclude bonuses from the definition of compensation. For the most part, the bonuses are small amounts, but pretty much everyone got one each year. Any thoughts as to whether this could be corrected under APRSC or which IRS correction program would be most appropriate?