Twitch's Ult Doesn't Say You Can't Hit Structures

Twitch's Ultimate will not hit structures like turrets and inhibitors. However, in the tool tip, this is not addressed. This is a very confusing aspect of the ultimate. The reason I think this should be fixed is that I lost my last Ranked game because of our Twitch who didn't know it couldn't do that (not that it was a big deal it wasn't his fault he didn't know). If visibility is what Riot is looking for, then this tool tip needs to be amended to contain the correct content of information.