diff --git a/webservices/cron.php b/webservices/cron.php
index ecf26cd462..8bc33e317e 100644
--- a/webservices/cron.php
+++ b/webservices/cron.php
@@ -220,7 +220,7 @@ function CronExec($oP, $aProcesses, $bVerbose)
 	while (time() < $iTimeLimit)
 	{
 		// Maintenance or ReadOnly mode
-		if (file_exists(MAINTENANCE_MODE_FILE) || !MetaModel::DBHasAccess(ACCESS_ADMIN_WRITE))
+		if (file_exists(MAINTENANCE_MODE_FILE) || file_exists(READONLY_MODE_FILE))
 		{
 			$oP->p("Maintenance detected, exiting");
 			return;