diff --git a/server/lib/classes/cron.d/900-letsencrypt.inc.php b/server/lib/classes/cron.d/900-letsencrypt.inc.php
index 5441ac2d78c412d448b85209124e0afee0be7dd9..0f6aaaed6bdea3dcfaf019d031a9a74f5beff564 100644
--- a/server/lib/classes/cron.d/900-letsencrypt.inc.php
+++ b/server/lib/classes/cron.d/900-letsencrypt.inc.php
@@ -36,7 +36,8 @@ class cronjob_letsencrypt extends cronjob {
 	public function onRunJob() {
 		global $app, $conf;
 
-		$letsencrypt = array_shift( explode("\n", shell_exec('which letsencrypt certbot /root/.local/share/letsencrypt/bin/letsencrypt')) );
+		$letsencrypt = explode("\n", shell_exec('which letsencrypt certbot /root/.local/share/letsencrypt/bin/letsencrypt'));
+		$letsencrypt = reset($letsencrypt);
 		if(is_executable($letsencrypt)) {
 			$version = trim(exec($letsencrypt . ' --version 2>/dev/null'));
 			if(preg_match('/^(\S+)\s+(\d+(\.\d+)+)$/', $version, $matches)) {