Although the goal of reducing human-caused wildfires has never changed, the tagline of the Smokey Bear campaign was adjusted in the 2000s, from "Only you can prevent forest fires" to "Only you can prevent wildfires". The main reason was to accurately expand the category beyond just forests to include wildlands, which include grasslands. Another reason was to respond to misplaced criticism from wildfire experts, and to distinguish 'bad' intentional or accidental wildfires from the needs of sustainable forests via natural 'good' fire ecology.