Index: apachesolr_search.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/apachesolr/apachesolr_search.module,v
retrieving revision 1.1.2.6.2.110
diff -u -p -r1.1.2.6.2.110 apachesolr_search.module
--- apachesolr_search.module	2 Jul 2009 08:50:46 -0000	1.1.2.6.2.110
+++ apachesolr_search.module	2 Jul 2009 19:09:16 -0000
@@ -219,7 +219,7 @@ function apachesolr_search_execute($keys
     return array();
   }
 
-  if ('' == $keys) {
+  if (('' == $keys) && isset($params['fq'])) {
     // Move the fq params to the q.alt for better performance.
     $params['q.alt'] = implode(' ', $params['fq']);
     unset($params['fq']);