diff --git a/certbot-nginx/tests/testdata/etc_nginx/invalid_unicode_comments.conf b/certbot-nginx/tests/testdata/etc_nginx/invalid_unicode_comments.conf
index 596044cc9..4d6384535 100644
--- a/certbot-nginx/tests/testdata/etc_nginx/invalid_unicode_comments.conf
+++ b/certbot-nginx/tests/testdata/etc_nginx/invalid_unicode_comments.conf
@@ -1,5 +1,5 @@
 # This configuration file is saved with EUC-KR (a.k.a. cp949) encoding,
-# including some Korean alphabets.
+# including some Korean letters.
 
 server {
     # 안녕하세요. 80번 포트에서 요청을 기다린다.