How to get labels at 0, 10, 20, 30 in an excel chart?

[jplank]

I have a stacked column chart in excel 2013. The x values for the data are the numbers 0 through 30. I would like the x-axis to have labels at 0, 10, 20, 30. When I format the x-axis to specify the interval between labels as 10, the labels show up at 4, 14, 24. Is there a simple way to get the labels at 0, 10, 20, 30. This seems like something that shouldn't be that hard, but I've been spending more time on it than I expected.