diff --git a/files/en-us/web/http/csp/index.md b/files/en-us/web/http/csp/index.md
index 60328c2c46781ab..798183c1b126b1a 100644
--- a/files/en-us/web/http/csp/index.md
+++ b/files/en-us/web/http/csp/index.md
@@ -158,7 +158,7 @@ The keyword `'self'` allows resources which are same-origin with the document it
 img-src 'self'
 ```
 
-You can also specify one or more hostnames, potentially including wildcards, and only resources served from those hosts will be allowed.
+You can also specify one or more hostnames, potentially including wildcards, and only resources served from those hosts will be allowed. This might be used, for example, to allow content to be served from a trusted CDN.
 
 ```plain
 img-src *.example.org