diff --git a/htdocs/contact/card.php b/htdocs/contact/card.php
index 0ee4cb10637..b082aa0a2e5 100644
--- a/htdocs/contact/card.php
+++ b/htdocs/contact/card.php
@@ -1035,7 +1035,7 @@ if (is_object($objcanvas) && $objcanvas->displayCanvasExists($action)) {
 
 			// Unsubscribe
 			if (!empty($conf->mailing->enabled)) {
-				if ($conf->use_javascript_ajax && $conf->global->MAILING_CONTACT_DEFAULT_BULK_STATUS==-1) {
+				if ($conf->use_javascript_ajax && isset($conf->global->MAILING_CONTACT_DEFAULT_BULK_STATUS) && $conf->global->MAILING_CONTACT_DEFAULT_BULK_STATUS == -1) {
 					print "\n".'<script type="text/javascript" language="javascript">'."\n";
 
 					print '
@@ -1062,7 +1062,8 @@ if (is_object($objcanvas) && $objcanvas->displayCanvasExists($action)) {
 				}
 				print '<tr>';
 				print '<td class="noemail"><label for="no_email">'.$langs->trans("No_Email").'</label></td>';
-				print '<td>'.$form->selectyesno('no_email', (GETPOSTISSET("no_email") ? GETPOST("no_email", 'int') : $object->no_email), 1, false, ($conf->global->MAILING_CONTACT_DEFAULT_BULK_STATUS==-1)).'</td>';
+				$useempty = (isset($conf->global->MAILING_CONTACT_DEFAULT_BULK_STATUS) && ($conf->global->MAILING_CONTACT_DEFAULT_BULK_STATUS == -1));
+				print '<td>'.$form->selectyesno('no_email', (GETPOSTISSET("no_email") ? GETPOST("no_email", 'int') : $object->no_email), 1, false, $useempty).'</td>';
 				print '</tr>';
 			}