diff --git a/modules/search/search.module b/modules/search/search.module
index 21a3657dfe0..bc3ef56480c 100644
--- a/modules/search/search.module
+++ b/modules/search/search.module
@@ -646,7 +646,9 @@ function search_node_update_index($node) {
while ($link = db_fetch_object($result)) {
$output[] = $link->caption;
}
- return '(' . implode(', ', $output) . ')';
+ if (count($output)) {
+ return '(' . implode(', ', $output) . ')';
+ }
}
/**