e-file rejected as dependent child filed w/o indicating that they will be claimed as dependent. What next?

Greetings --

 

My e-file got rejected w/ the message:

 

This return has been rejected by the IRS because a dependent on this tax return has filed their own tax return without indicating they would be claimed as a dependent. The dependent's SSN cannot be used to on two separate tax returns, without that indication.

 

I've asked my child (fun time student living w/ me and thus qualifying as a dependent) to fix his return (he e-filed from TurboTax about a month before me). From here on could I still e-file from TurboTax or do I have have to file by mail?

 

Thank you,

 

-DM