diff --git a/docs/04-forms-and-serializers.md b/docs/04-forms-and-serializers.md
index 080d29b..356403b 100644
--- a/docs/04-forms-and-serializers.md
+++ b/docs/04-forms-and-serializers.md
@@ -273,7 +273,8 @@ impl Default for Settings {
 ```
 
 Again, exceeding the book's parameters, I'm going to say that if the file is
-missing the default parameters should hold:
+missing the default parameters should hold, so the presence of a valid
+configuration isn't a show-stopper and should not be required.
 
 ``` rust
 pub(crate) fn get_configuration() -> Result<Settings, config::ConfigError> {