diff --git a/HowtoLetsEncrypt.md b/HowtoLetsEncrypt.md
index 18754b0f..cf6fe01d 100644
--- a/HowtoLetsEncrypt.md
+++ b/HowtoLetsEncrypt.md
@@ -87,7 +87,7 @@ Configuration Stretch :
 
 ~~~
 location ~ /.well-known/acme-challenge {
-    alias /var/lib/letsencrypt/
+    alias /var/lib/letsencrypt/;
     try_files $uri =404;
     allow all;
 }