diff --git a/index.php b/index.php
index dd4dba014..2744fd9dc 100644
--- a/index.php
+++ b/index.php
@@ -379,7 +379,7 @@ if ($bb_cfg['birthday_check_day'] && $bb_cfg['birthday_enabled']) {
                 $week_all = true;
                 continue;
             }
-            $week_list[] = profile_url($week) . ' <span class="small">(' . birthday_age($week['user_birthday'] - 1) . ')</span>';
+            $week_list[] = profile_url($week) . ' <span class="small">(' . birthday_age($week['user_birthday']) . ')</span>';
         }
         $week_all = ($week_all) ? '&nbsp;<a class="txtb" href="#" onclick="ajax.exec({action: \'index_data\', mode: \'birthday_week\'}); return false;" title="' . $lang['ALL'] . '">...</a>' : '';
         $week_list = sprintf($lang['BIRTHDAY_WEEK'], $bb_cfg['birthday_check_day'], implode(', ', $week_list)) . $week_all;