Correcting a Late ACP Testing Failure

This employer is correcting failed nondiscrimination testing for a prior plan year using the one-to-one method under Revenue Procedure 2013-12, Appendix B, section 2. When allocating the QNEC to eligible NHCEs should the employer use the plan's definition of compensation for the year of the failure or total compensation for the year of the failure? IRS guidance does not appear to address this specific question (the revenue procedure merely states it must be a uniform allocation as a percentage of compensation).