Changes could be in store for gang legislation after a judge handed back a patch to a Mongrel Mob member. 

Police were ordered to return the patch after its owner was arrested for wearing it publicly. 

Justice Minister Paul Goldsmith says he can't comment on decisions of judges, but isn't ruling out changing the law. 

"There's a legal process to go through, it may be appealed - I don't know. We'll wait and see how it all plays out, and if we find that we've got a problem, we'll fix it."

LISTEN ABOVE