diff --git a/modules/taxonomy.module b/modules/taxonomy.module
index 7697a775f9bc1e7588c5010a3354f028b5eccd2d..24df3222846072c15b64c37d38fb1e13c8b5f821 100644
--- a/modules/taxonomy.module
+++ b/modules/taxonomy.module
@@ -1237,7 +1237,8 @@ function taxonomy_term_page($str_tids = '', $depth = 0, $op = 'page') {
     }
 
     if ($names) {
-      drupal_set_title($title = implode(', ', $names));
+      $title = check_plain(implode(', ', $names));
+      drupal_set_title($title);
 
       switch ($op) {
         case 'page':
diff --git a/modules/taxonomy/taxonomy.module b/modules/taxonomy/taxonomy.module
index 7697a775f9bc1e7588c5010a3354f028b5eccd2d..24df3222846072c15b64c37d38fb1e13c8b5f821 100644
--- a/modules/taxonomy/taxonomy.module
+++ b/modules/taxonomy/taxonomy.module
@@ -1237,7 +1237,8 @@ function taxonomy_term_page($str_tids = '', $depth = 0, $op = 'page') {
     }
 
     if ($names) {
-      drupal_set_title($title = implode(', ', $names));
+      $title = check_plain(implode(', ', $names));
+      drupal_set_title($title);
 
       switch ($op) {
         case 'page':