Guild listed in banner

The guild currently listed on the banner of my character page is an old guild I’m no longer a part of. I am currently in a different guild and have activated the link that makes me a member of the new guild. How do I change the guild listed on the banner to the new guild?

Hi there,

Assuming you are on classic, you need to update your Blizzard forum activity by liking a post on the Blizzard forums with that character, and then click ‘Update’ on your WCL character page.

Perfect. Thanks. It worked