1099-R for code P. Did not put a IRA contribution in 2015 taxes.

I received a 1099-R for a code of “P-Return of contribution taxable in 2015.” The root cause of this is that I recharacterized the IRA contribution into a ROTH IRA. In looking at my 2015 taxes I only put a $5,500 contribution into my ROTH and $0 shows as the contribution into the IRA. Do I need to amend my 2015 returns and if so, since I listed $0 as my 2015 IRA contribution, what exactly would I amend? "