diff --git a/doc/check-certificates.md b/doc/check-certificates.md
index 1e69af46..c6db7c88 100644
--- a/doc/check-certificates.md
+++ b/doc/check-certificates.md
@@ -85,7 +85,7 @@ Given you have a certificate on you server, you can use `check-certificates`
 for the initial import. Just create a *dummy* certificate with short lifetime
 that matches criteria to be renewed:
 
-    /certificate/add name=example.com common-name=example.com days-valid=1;
+    /certificate/add name="example.com" common-name="example.com" subject-alt-name="DNS:example.com" days-valid=1;
     /certificate/sign example.com;
     /system/script/run check-certificates;