diff --git a/docs/extensions/metadata.md b/docs/extensions/metadata.md
index a89f45fdd..fb6fd227a 100644
--- a/docs/extensions/metadata.md
+++ b/docs/extensions/metadata.md
@@ -129,7 +129,7 @@ disqus: your-shortname
 Disqus can also be disabled for a specific page by setting it to an empty value:
 
 ``` markdown
-disqus:
+disqus: ''
 ```
 
   [3]: ../getting-started.md#disqus