If MD Tax Free Bond interest - I entered the interest income in BOX 8 of the 1099 - INT section but it doesn't correct an earlier mistake where I did not check Box 8?

I entered the tax free interest in Box 8 (and NOT Box 1)  and it shows up in the summary of interest accounts correctly, but when I print out the completed 1040, it does not list the tax free interest as tax free.