MySQL Wildcard not working

SELECT SQL_CALC_FOUND_ROWS wp_comments.*, wp_posts.post_title, wp_posts.post_name FROM wp_comments INNER JOIN wp_posts ON ( wp_posts.ID = wp_comments.comment_post_ID ) WHERE 1=1 AND wp_comments.comment_content LIKE ‘%nibh%’ AND wp_posts.post_date >= ‘2009-02-03 00:00:00’ AND comment_approved = ‘1’ ORDER BY comment_date DESC LIMIT 0, 5

The wild card operator is not working, not sure why.