If you clicked "Maximize My Credit" the program  will tax the distribution and take an education credit if the credit is more than the tax. 

Please revisit the "Education Information" section located on the "Here's Your Education Summary" page. 

Go through and answer the questions. On the last screen it should show the amount of education expenses being used for a credit. You can change this to zero if you do not want  the distribution taxed. 

You may also type   letme   into the search box and change the credit. 

If you do not choose a credit, (leave all boxes blank), no credit will be claimed.