Something wrong with "Use 'throw' expression" Follow

I'm running ReSharper 2016.3.2

Considering the following code

if (store == null) throw new ArgumentNullException(nameof(store));

this.store = store;

RS's suggestion is to replace the 1st line with Use 'throw' expression, which will looks like this after use

this.store = store ?? throw new ArgumentNullException(nameof(store));

However, after refactoring ?? is highlighted with an error "Expression expected"

Could you please advise if there's some way to fix that?