diff --git a/contrib/rating/main.php b/contrib/rating/main.php
index 6c2721aa..f456fdf3 100644
--- a/contrib/rating/main.php
+++ b/contrib/rating/main.php
@@ -116,7 +116,7 @@ class Ratings implements Extension {
 			if(preg_match("/^rating=(safe|questionable|explicit|unknown)$/", strtolower($event->term), $matches)) {
 				$text = $matches[1];
 				$char = $text[0];
-				$event->add_querylet(new Querylet("rating = ?", array($char)));
+				$event->add_querylet(new Querylet("rating = :img_rating", array("img_rating"=>$char)));
 			}
 		}