How to get rid of stage fright?

I am doing Charlie and the Chocolate Factory at my local theater. I have done 11 plays and have never had stage fright. Now all the sudden I do! And I am only an oompa loompa! It's like the smallest part i have ever gotten! But I do have one line, it is- "So I'll let you do just that. But before I do, I should perhaps fill you in on what's been happening around here lately. Because Mr. Willy Wonka makes the best chocolate in the whole word, three other great chocolate makers known as Mr Ficklegruber, Mr. Prodnose, and Mr. Slugworth have sent spies to work for Mr. Wonka in order to discover his secrets." I think it is because the version we are doing is not a musical. I am more comfortable in musicals. We have already had three shows, and i did fine and all, but I feel like i'm holding back. Any suggestions how to make the stage fright go away?