// we'll also add TinyRGB profile to images lacking a profile, but
// only if they're not low quality (which are meant to save bandwith
// and we don't want to increase the filesize by adding a profile)
- if ( $params['quality'] > 30 ) {
+ if ( isset( $params['quality'] ) && $params['quality'] > 30 ) {
$profiles[] = '-';
}