diff --git a/apachesolr_search.module b/apachesolr_search.module
index 053e374..409efd0 100644
--- a/apachesolr_search.module
+++ b/apachesolr_search.module
@@ -432,7 +432,7 @@ function apachesolr_search_highlighting_params(DrupalSolrQueryInterface $query =
   $params['hl.simple.post'] = variable_get('apachesolr_hl_posttag', NULL);
   $params['hl.snippets'] = variable_get('apachesolr_hl_numsnippets', NULL);
   // This should be an array of possible field names.
-  $params['hl.fl'] = variable_get('apachesolr_hl_fieldtohightlight', NULL);
+  $params['hl.fl'] = variable_get('apachesolr_hl_fieldtohighlight', NULL);
   $params = array_filter($params);
   if ($query) {
     $query->addParams($params);