David Marshall has admitted he will have to play second fiddle once Craig Gordon returns to fitness.
The Cardiff goalkeeper is set to start for Scotland in Saturday's friendly against Wales as Gordon is currently sidelined with a fractured arm.
Marshall is determined to impress but accepts that Gordon will probably get the nod as soon as he is available again.
"It's hard. Obviously Craig's been number one here for years, he's done great, so you just have to keep working hard and if you get a chance then prove your worth," said the 24-year-old.
"We've not got another international until March so he'll probably be back then.
"It gives me a chance for Saturday and hopefully I can do well."
Marshall continued: "I think, realistically, Craig is going to be the number one if he is fit.
"I know that, everybody else knows that, the gaffer knows that - all I can do is do well in the games I play in and show the gaffer that I'm worthy to be number two and if there's ever a problem that I can step up.
"When I come to Scotland, Craig's the number one and I don't expect to play. So it's not as tough mentally."
Blown out of proportion
Marshall did vent his frustration at being an unused substitute in last month's friendly defeat to Japan, when Gordon played the whole 90 minutes.
Having previously done well against Holland, Marshall was disappointed not to get on the pitch as only 17 fit players made the 12,000 mile round trip.
However, he insists his quotes were taken the wrong way, adding: "I think it was sort of blown out of proportion.
"Somebody asked me if I was disappointed going to Japan and not playing.
"The type of person I am, I am always disappointed when I'm not playing.
"But that's the way it happens in international football. Craig was there and he usually plays so it was blown out of proportion I think.
"It's not a problem and I've just put it behind me; it's a bit of a nuisance but hopefully I can play on Saturday."