This constantly causes issues. The following link has an embedded image of the correct type. When he goes into the Commissionares or wherever he decides to go, he'll have to specify that this is for the entire records holding. It won't have fingerprints when he receives it and looks like the most unassuming piece of paper, yet it's vital to your immigration journey.
https://www.fickeymartinezlaw.com/immigration/consular-processing/canada-police-certificate-us-visa-document-requirement
If you search back on the forum, there have been MANY questions asked about this and lots of examples, as shown in the link, of the same thing. I initially ended up with the wrong check myself, but The Fingerprint Room in Calgary rectified the situation. That said, it slowed us down 3 months, so yes, definitely take an example in to ensure its the correct version he'll get!
Good luck!