diff --git a/ext/rating/main.php b/ext/rating/main.php
index e53141c8..77ecac2a 100644
--- a/ext/rating/main.php
+++ b/ext/rating/main.php
@@ -104,7 +104,7 @@ class Ratings extends Extension {
 			$set = Ratings::privs_to_sql(Ratings::get_user_privs($user));
 			$event->add_querylet(new Querylet("rating IN ($set)"));
 		}
-		if(preg_match("/^rating=(?:([sqeu]+)|(safe|questionable|explicit|unknown))$", strtolower($event->term), $matches)) {
+		if(preg_match("/^rating=(?:([sqeu]+)|(safe|questionable|explicit|unknown))$/D", strtolower($event->term), $matches)) {
 			$ratings = $matches[1] ? $matches[1] : array($matches[2][0]);
 			$ratings = array_intersect($ratings, str_split(Ratings::get_user_privs($user)));
 			$set = "'" . join("', '", $ratings) . "'";