diff --git a/README.md b/README.md
index d1a4d6c..778825d 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,8 @@ This plugin can be installed via:
 
     python -m pip install pelican-pdf
 
+As long as you have not explicitly added a `PLUGINS` setting to your Pelican settings file, then the newly-installed plugin should be automatically detected and enabled. Otherwise, you must add `pdf` to your existing `PLUGINS` list. For more information, please see the [How to Use Plugins](https://docs.getpelican.com/en/latest/plugins.html#how-to-use-plugins) documentation.
+
 Usage
 -----