Third GPU not recognized

Hi!
I've been mining with two GTX 980 cards fine for a while now. I recently added a third 980, but the program still recognize only two cards. My lspci lists the 3rd as a valid GPU, I am also able to use it with other programs (i.e. Hashcat). My nvidia driver is up to date. I use Ubuntu 16.04.2 LTS, and Equihash CPU&GPU Miner for NiceHash v0.4b
Is the problem with me, or the mining program?
Thanks in forward!

Nevermind I found out, in the ./nheqminer_cuda_tromp -cd parameter I had to add a 2 next to the 0 and 1, telling the program to use the third GPU as well! Sorry for silly question!