Accidentally included a third-party sick pay W2 with mailed return. Problem?

[KG31]

I had to file by mail this year and had a W2 for third party sick pay (code J in box 12; box 13 3rd party sick pay checked; $0 in boxes 1, 3, and 5). I mailed it in along with my return and other W2s.

The return still hasn't been processed. Is it a problem that this W2 is in there even though it doesn't "need" to be included from what I read?

Thanks.