diff --git a/modules/search/search.module b/modules/search/search.module
index 7542f98..6be2fc5 100644
--- a/modules/search/search.module
+++ b/modules/search/search.module
@@ -793,7 +793,7 @@ function search_touch_node($nid) {
  */
 function search_node_update_index($node) {
   // Transplant links to a node into the target node.
-  $result = db_query("SELECT caption FROM {search_node_links} WHERE nid = :nid", array(':nid' => $node->nid), array('target' => 'slave'));
+  $result = db_query("SELECT DISTINCT caption FROM {search_node_links} WHERE nid = :nid", array(':nid' => $node->nid), array('target' => 'slave'));
   $output = array();
   foreach ($result as $link) {
     $output[] = $link->caption;