Error querying database

Error querying database.Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_unicode_ci,COERCIBLE) for operation '='Query: SELECT photos.photoid, phototitle, photofilename, thumbx, thumby, x, y, views, rating, totalvotes, count(*) as matches FROM `keywords` LEFT JOIN photos ON photos.photoid=keywords.photoid where keyword='s��dermalm' GROUP by photos.photoid HAVING matches=1 ORDER BY matches DESC, rating DESC, views DESC LIMIT 0, 8