diff --git a/docs/content/https/include-acme-multiple-domains-example.md b/docs/content/https/include-acme-multiple-domains-example.md
index 4e9d02773..7fbeb9e06 100644
--- a/docs/content/https/include-acme-multiple-domains-example.md
+++ b/docs/content/https/include-acme-multiple-domains-example.md
@@ -40,7 +40,7 @@ spec:
     domains:
     - main: example.org
       sans:
-      - *.example.org
+      - '*.example.org'
 ```
 
 ```json tab="Marathon"