diff --git a/docs/Cask-Cookbook.md b/docs/Cask-Cookbook.md
index c096a442fc..7965868cc9 100644
--- a/docs/Cask-Cookbook.md
+++ b/docs/Cask-Cookbook.md
@@ -647,7 +647,7 @@ installer script: "#{staged_path}/install.sh"
 
 ### Stanza: `language`
 
-The `language` stanza can match [ISO 639-1](https://en.wikipedia.org/wiki/ISO_639-1) language codes, regional identifiers ([ISO 3166-1 Alpha 2](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2)) and script codes ([ISO 15924](https://en.wikipedia.org/wiki/ISO_15924)), or a combination thereof.
+The `language` stanza can match [ISO 639-1](https://en.wikipedia.org/wiki/ISO_639-1) language codes, script codes ([ISO 15924](https://en.wikipedia.org/wiki/ISO_15924)), and regional identifiers ([ISO 3166-1 Alpha 2](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2)), or a combination thereof.
 
 US English should always be used as the default language: