Protected: in Page title?

I am using twenty twelve theme. I have a page that I password protected. I realize that when I am logged on as admin I won’t be prompted for the password, but I don’t get prompted even when I log out and navigate to my page . It worked at one time, but now it doesn’t a and can figure out why. I checked the page. Password protected appears…and PROTECTED: appears in the page title. Any thoughts?. Thanks for your help