Clickz is reporting today that Mike Baker is scheduled to leave Nokia on August 8. Baker became head of Nokia Interactive Advertising after the company bought Enpocket last year. His expertise is sure to be missed.

Baker joined mobile advertising firm Enpocket in 2004 and help build the company after its formation in 2001. Enpocket was acquired by Nokia last year. Since then, he has been instrumental in expanding the Nokia Media Network. He will be replaced by Tom Henricksson, a longtime Nokia executive. Baker is upbeat about Henricksson.

“From Nokia’s perspective, Tom’s a great guy to head the business at this stage. The objectives are no longer to prove out of market, but now scale of business, achieve operational excellence, and systems required for a more mature market,” Baker said.