diff --git a/@xen-orchestra/backups/HealthCheckVmBackup.mjs b/@xen-orchestra/backups/HealthCheckVmBackup.mjs
index 51b2788c2e9..cbbf13d8d8e 100644
--- a/@xen-orchestra/backups/HealthCheckVmBackup.mjs
+++ b/@xen-orchestra/backups/HealthCheckVmBackup.mjs
@@ -84,8 +84,6 @@ export class HealthCheckVmBackup {
                 `timeout reached while waiting for ${refOrUuid} to report the startup script execution.`,
             }
           )
-          const scriptOk = new Date()
-          remainingTimeout -= scriptOk - guestToolsReady
 
           if (startedRestoredVm.xenstore_data['vm-data/xo-backup-health-check'] !== 'success') {
             const message = startedRestoredVm.xenstore_data['vm-data/xo-backup-health-check-error']