diff --git a/ext/rating/main.php b/ext/rating/main.php
index 90f5862ca..bd1f29dc9 100644
--- a/ext/rating/main.php
+++ b/ext/rating/main.php
@@ -226,9 +226,12 @@ public function onRatingSet(RatingSetEvent $event): void
     {
         if (empty($event->image['rating'])) {
             $old_rating = "";
+            error_log("ratings: no old rating.");
         } else {
             $old_rating = $event->image['rating'];
+            error_log("ratings: old rating is ".$old_rating);
         }
+        error_log("ratings: calling set_rating for image ".$event->image.id.", new rating ".$event->rating.", old rating ".$old_rating);
         $this->set_rating($event->image->id, $event->rating, $old_rating);
     }