Forgot to sign I-131 Re-entry form

[hjmnk75]

Hi all,

Please see below timeline -

07 JAN 2020 - Entered US for first time with DV visa. Visa is stamped.
08 JAN 2020 - I-131 is delivered to USCIS office (FedEx)
12 JAN 2020 - Left US.

The problem is I forgot to sign the I-131.
- Would it be wise to print the last page of I-131 and send to USCIS after signing?
- Or should I wait until USCIS send a rejection?

Thank you all in advanced!