diff --git a/readme.md b/readme.md
index 48d731b..350bc3f 100644
--- a/readme.md
+++ b/readme.md
@@ -16,7 +16,7 @@ This is being created to scratch an itch for me and only me.
 
 `make why` will generate a raw go binary.
 
-`make why.app` will generate a Mac app bundle for convenient installation to your `/Applications` folder.
+`make why.app` will generate a [Mac app bundle](https://en.wikipedia.org/wiki/Bundle_(macOS)#Application_bundles) for convenient installation to your `/Applications` folder.
 
 ## Logo image credit