diff --git a/content/en/functions/isset.md b/content/en/functions/isset.md
index 8f2c3f7ad..d6aa2b597 100644
--- a/content/en/functions/isset.md
+++ b/content/en/functions/isset.md
@@ -27,5 +27,6 @@ Takes either a slice, array, or channel and an index or a map and a key as input
 
 {{% warning %}}
 All site-level configuration keys are stored as lower case. Therefore, a `myParam` key-value set in your [site configuration file](/getting-started/configuration/) needs to be accessed with `{{if isset .Site.Params "myparam"}}` and *not* with `{{if isset .Site.Params "myParam"}}`. Note that you can still access the same config key with `.Site.Params.myParam` *or* `.Site.Params.myparam`, for example, when using [`with`](/functions/with).
+This restriction also applies when accessing page-level front matter keys from within [shortcodes](/content-management/shortcodes/).
 {{% /warning %}}