WiFi dongle touching wall connected to Samsung UE40B8000

Hi.

I've just mounted my new Samsung UE40B8000 TV onto my wall using the Samsung ultra slim wall bracket (WMN1000B).  I've connected the Samsung WiFi dongle (WIS09ABGN) to the TV using one of the USB connectors, but its sticking out too far - by about 1cm.  So the two wall bracket pads at the bottom on the TV are approx 1cm away from the wall!?

The wall bracket came with a few spacers which you need to fit if you're connecting a scart socket to the TV (so the TV sits further away from the wall) - surely I don't need to fit those spacers just so my WiFi dongle doesn't touch the wall too?  Very poor dongle design if so...?  I'm wondering if I bought the wrong dongle?

Thanks, Jason.