People who have replaced their Vanos oil supply line, inside

I swapped this line out last week and the one I took off had two crush washers. One on each side of the banjo fitting. I was just filing this jpeg in the on line manual and I noticed the diagram indicates just one crush washer on the outside of the fitting. Do any of you remember if it was one or two? I tend to trust what came off the car vs a diagram. Currently it's dry and in good service.