--- apachesolr_facetbuilder.module	2010-06-04 13:02:32.000000000 +0200
+++ apachesolr_facetbuilderNew.module	2010-06-04 13:00:45.000000000 +0200
@@ -172,7 +172,8 @@ function _apachesolr_facetbuilder_get_vi
  */
 function apachesolr_facetbuilder_facet_name($facet, &$options = NULL) {
   $facets = _apachesolr_facetbuilder_get_all_facets();
-  return !empty($facets[$facet]['title']) ? $facets[$facet]['title'] : '';
+  $key = is_array($facet) ? $facet['#value'] : $facet;
+  return !empty($facets[$key]['title']) ? $facets[$key]['title'] : '';
 }