Apple, responding to complaints the screen on its sleek, recently introduced iPod cracks too easily, said on Wednesday it will replace any defective units.

“It is a real, but minor issue involving vendor quality problems,” an Apple spokesman said of the nano screen issue.

He added the problem has occurred in less than one-tenth of 1 percent of the iPod nanos sold so far.

“Any user with a defective screen should contact Apple … and we will replace it for free,” the spokesman said. “It’s not a design issue.”