SQL syntax error in Reviews

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1064 - You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1

 

select r.reviews_id, r.reviews_rating, p.products_id, p.products_image, pd.products_name from reviews r, reviews_description rd, products p, products_description pd where p.products_status = '1' and p.products_id = r.products_id and r.reviews_id = rd.reviews_id and rd.languages_id = '1' and p.products_id = pd.products_id and pd.language_id = '1' order by r.reviews_id desc limit

 

This is under reviews. Any ideas?