How do I recover the income tax paid on EI in 2016 after repayment?

I received EI over 2016/2017 after a wrongful dismissal.  I later returned to my work and received all my backpay and repayed the EI.  This repayment is reported on my 2017 T4E.  However, TurboTax is only reporting the income tax deducted in 2017 as a refund. 

How do I recover the income tax deducted in 2016?