RDP in California - Filed federal and can we e-file state?

I'm using Turbotax desktop. My partner and I are in a RDP in California.

 

I've prepared and filed our separate (single-status) federal returns to the IRS.

 

Now I'm trying to file our joint California return but it's telling me I can't efile because I obviously don't want to file a joint federal return.

 

Just confirming that my only option to mail in my California return?