Thread:Extension talk:Semantic Extra Special Properties/SMW\UpdateJob and "non-static method ... should not be called statically"

Looking at my "SMW\UpdateJob" I see this warning pop up all the time: Strict Standards: call_user_func_array expects parameter 1 to be a valid callback, non-static method SemanticESP::sespUpdateDataBefore should not be called statically in /srv/www/mwcode/includes/Hooks.php on line 199 Could this be avoided?