diff --git a/server/cron_daily.php b/server/cron_daily.php
index 10f168812ca7649b85eb5c960fe8bc976331afdc..326973616d900d7cadcfcd9db8b1322981949675 100644
--- a/server/cron_daily.php
+++ b/server/cron_daily.php
@@ -670,7 +670,7 @@ function send_notification_email($template, $placeholders, $recipients) {
 	$mailSubject = '';
 	$inHeader = true;
 	for($l = 0; $l < count($lines); $l++) {
-		if($lines[$l] == '') {
+		if(trim($lines[$l]) == '') {
 			$inHeader = false;
 			continue;
 		}