Missing "Custom" statistics option under Symbology. How do I fix it?

[SynxWilde]

Trying to do some symbology on a raster, found there's no "Custom" under "Statistics."

Is there a reason why? Is it possible to resolve it? If so, how?

[BarryNorthey · Accepted solution]

Try:

To get:

[SynxWilde]

Thanks! That's what it was, cheers!