diff --git a/plugins/af_sort_bayes/init.php b/plugins/af_sort_bayes/init.php
index 51a6f38bb..517d684d4 100644
--- a/plugins/af_sort_bayes/init.php
+++ b/plugins/af_sort_bayes/init.php
@@ -79,7 +79,7 @@ class Af_Sort_Bayes extends Plugin {
 				switch ($current_category) {
 					case "UGLY":
 						$dst_category = "BAD";
-						$score = $this->score_modifier;
+						$score = -$this->score_modifier;
 						break;
 					case "BAD":
 						$dst_category = "BAD";