--- event.module.org	2008-12-01 15:49:30.000000000 +0000
+++ event.module	2009-03-09 12:55:40.000000000 +0000
@@ -1011,7 +1011,7 @@
         $cur_date['minute'] = '00';
         while (event_is_later($node_end, $cur_date)) {
           if (event_same_day($cur_date, $node->event['end_exploded'])) {
-            if ($node->event['end_exploded']['hour'] = '23' && $node->event['end_exploded']['minute'] = '59') {
+            if ($node->event['end_exploded']['hour'] == '23' && $node->event['end_exploded']['minute'] == '59') {
               $nid->state = 'allday';
             }
             else {
@@ -1021,7 +1021,7 @@
             break;
           }
           elseif (event_same_day($cur_date, $node->event['start_exploded'])) {
-            if ($node->event['start_exploded']['hour'] = '00' && $node->event['start_exploded']['minute'] = '00') {
+            if ($node->event['start_exploded']['hour'] == '00' && $node->event['start_exploded']['minute'] == '00') {
               $nid->state = 'allday';
             }
             else {