diff --git a/includes/casetracker_views_handler_field_case_count.inc b/includes/casetracker_views_handler_field_case_count.inc
index 3c0b75a..d6e2b97 100755
--- a/includes/casetracker_views_handler_field_case_count.inc
+++ b/includes/casetracker_views_handler_field_case_count.inc
@@ -9,7 +9,7 @@ class casetracker_views_handler_field_case_count extends views_handler_field {
 
   // Empty query method -- we query in pre_render().
   function query() {
-    
+
   }
 
   // Add options for case types.
@@ -50,7 +50,7 @@ class casetracker_views_handler_field_case_count extends views_handler_field {
   }
 
   // Query for counts once all rows have been collected.
-  function pre_render($values) {
+  function pre_render(&$values) {
     $nids = array();
     foreach ($values as $row) {
       $nids[] = $row->nid;