diff --git a/support.module b/support.module
index ff471a8..cb40f9a 100644
--- a/support.module
+++ b/support.module
@@ -1503,20 +1503,20 @@ function support_mail_tokens($account, $language, $nid, $comment, $suppress) {
     '!site' => variable_get('site_name', 'Drupal'),
     '!uri' => $base_url,
     '!uri_brief' => preg_replace('!^https?://!', '', $base_url),
-    '!uri_login' => url('user/register', array('absolute' => TRUE, 'alias' => variable_get('support_use_aliased_urls', TRUE))),
+    '!uri_login' => url('user/register', array('absolute' => TRUE, 'alias' => !variable_get('support_use_aliased_urls', TRUE))),
     '!mailto' => $account->mail,
     '!date' => format_date(REQUEST_TIME, 'medium', '', NULL, $language->language),
     '!ticket_subject' => check_plain($node->title),
     '!ticket_body' => $suppress ? t('The text of this ticket was manually suppressed.  You must view the ticket online to see it.') . "<br />\n" : $body . _support_mail_list_attachments($node, $comment),
-    '!ticket_url' => url("node/$nid", array('absolute' => TRUE, 'language' => $language, 'fragment' => "comment-$cid", 'alias' => variable_get('support_use_aliased_urls', TRUE))),
-    '!update_url' => url("node/$nid", array('absolute' => TRUE, 'language' => $language, 'fragment' => "comment-form", 'alias' => variable_get('support_use_aliased_urls', TRUE))),
+    '!ticket_url' => url("node/$nid", array('absolute' => TRUE, 'language' => $language, 'fragment' => "comment-$cid", 'alias' => !variable_get('support_use_aliased_urls', TRUE))),
+    '!update_url' => url("node/$nid", array('absolute' => TRUE, 'language' => $language, 'fragment' => "comment-form", 'alias' => !variable_get('support_use_aliased_urls', TRUE))),
     '!update' => $suppress ? t('The text of this ticket update was manually suppressed.  You must view the ticket online to see the update.') . "<br />\n" : check_markup((isset($comment->language) && isset($comment->comment_body[$comment->language][0])) ? $comment->comment_body[$comment->language][0]['value'] : '') . _support_mail_list_attachments($node, $comment),
     '!state' => ((isset($previous->state) && $previous->state != $node->state) ? _support_state($previous->state) . ' -> ' : '') . _support_state($node->state),
     '!priority' => ((isset($previous->priority) && $previous->priority != $node->priority) ? _support_priorities($previous->priority) . ' -> ' : '') . _support_priorities($node->priority),
     '!assigned_username' => !empty($assigned) ? $assigned->name : '',
     '!assigned_realname' => !empty($assigned) ? theme('username', array('account' => $assigned)) : '',
-    '!unsubscribe_ticket' => url("support/$nid/unsubscribe/$account->uid/$ticket_unsubscribe_key", array('absolute' => TRUE, 'language' => $language, 'alias' => variable_get('support_use_aliased_urls', TRUE))),
-    '!unsubscribe_all' => url("support/all/unsubscribe/$account->uid/$all_unsubscribe_key", array('absolute' => TRUE, 'language' => $language, 'alias' => variable_get('support_use_aliased_urls', TRUE))),
+    '!unsubscribe_ticket' => url("support/$nid/unsubscribe/$account->uid/$ticket_unsubscribe_key", array('absolute' => TRUE, 'language' => $language, 'alias' => !variable_get('support_use_aliased_urls', TRUE))),
+    '!unsubscribe_all' => url("support/all/unsubscribe/$account->uid/$all_unsubscribe_key", array('absolute' => TRUE, 'language' => $language, 'alias' => !variable_get('support_use_aliased_urls', TRUE))),
   );
   if (!empty($account->password)) {
     $tokens['!password'] = $account->password;