SIF PowerShell Validation Error when Skipping SXA Storefront Installation

I was setting up my Sitecore Experience Commerce 9.0.2 installation to install without SXA Storefront, following the instructions from the installation guide:


Oddly, after copying the text from the installation guide, I get the following error:


Turns out that copying and pasting the command (we always like shortcuts) the hyphen is encoded as a different character, causing the error above. At first glance it's hard to notice or identify visually, but I had a hunch it might be the issue:


I deleted the hyphen, and manually entered it and it worked! Sometimes shortcuts lead to total randomness :)