The actress said their initially animosity was due to the long hours that it took the actress to get ready.
"My hair used to get really frizzy. And they had to blow dry it between shots," she said during an appearance on Jimmy Kimmel Live! with Duchovny, who played Fox Muller on the show.
Anderson also confided to Kimmel that returning to play the character after such a long gap was not as easy as she expected it be.
The "X-Files: Event Series" would premiere on Star World Premiere HD on January 30th, 9pm.