Filing the dreaded 1040NR tax Return - HELP!

Hi. I cannot find an answer to this question anywhere! We are married Canadian couple with (minimal!) rental income from a US property. I have an ITIN, my spouse does not. Can we file the 1040NR return under "married filing jointly" status using just MY ITIN, or does my spouse also require ITIN in this case? Can anybody help me on this? Thanks.

1040NR is never joint.

She needs an ITIN.

How have you been filing in the past?