Text is inversed on Skydome?

I’m going through a lighting tutorial on the main Unreal Video Tutorials homepage Epic Developer Community and I have experimented bringing in my own HDR image to drag into the inversed sky dome. The only problem is the image is now inversed (as it should be). How do I flip it back so the text doesn’t read mirrored?!

Either Fix your UVs, or simply mirror the image.

Thanks. There was a flip horizontal parameter on the instance as an example in the tutorial. Worked a treat.