diff --git a/instance/src/lib/nginx.ts b/instance/src/lib/nginx.ts
index 7a52162..b966b9a 100644
--- a/instance/src/lib/nginx.ts
+++ b/instance/src/lib/nginx.ts
@@ -86,6 +86,7 @@ server {
 	}
 
 	private async gen_cert(domain: string) {
+		if (await exists(`/etc/letsencrypt/live/${domain}`)) return;
 		await run(
 			"certbot",
 			"--nginx",