diff --git a/infra/nginx/default.conf b/infra/nginx/default.conf
index 743dd53c..38a97072 100644
--- a/infra/nginx/default.conf
+++ b/infra/nginx/default.conf
@@ -5,7 +5,7 @@ server {
     root /work/public;
 
 	ssl_certificate /etc/letsencrypt/live/kikikan.xyz/cert.pem;
-	ssl_certificate_key /etc/letsencrypt/live/kikikan.xyz/chain.pem;
+	ssl_certificate_key /etc/letsencrypt/live/kikikan.xyz/privkey.pem;
 
 	access_log /var/log/nginx/ssl-access.log;
 	error_log /var/log/nginx/ssl-error.log;