diff --git a/spring-boot-project/spring-boot-docs/src/docs/asciidoc/spring-boot-features.adoc b/spring-boot-project/spring-boot-docs/src/docs/asciidoc/spring-boot-features.adoc
index c0d722aedf3..fe72e09163d 100644
--- a/spring-boot-project/spring-boot-docs/src/docs/asciidoc/spring-boot-features.adoc
+++ b/spring-boot-project/spring-boot-docs/src/docs/asciidoc/spring-boot-features.adoc
@@ -887,6 +887,8 @@ To import these properties, you can add the following to your `application.prope
 
 You can then access or inject `myapp.username` and `myapp.password` properties from the `Environment` in the usual way.
 
+NOTE: Filenames with dot notation are also correctly mapped.
+
 TIP: Configuration tree values can be bound to both string `String` and `byte[]` types depending on the contents expected.
 
 If you have multiple config trees to import from the same parent folder you can use a wildcard shortcut.