diff --git a/crates/nuon/README.md b/crates/nuon/README.md
index d11aa8104c..158a9d2e7d 100644
--- a/crates/nuon/README.md
+++ b/crates/nuon/README.md
@@ -4,7 +4,7 @@ The NUON format is a superset of JSON designed to fit the feel of Nushell.
 Some of its extra features are
 - trailing commas are allowed
 - commas are optional in lists
-- quotes are not required around keys or any _bare_ string that do not contain spaces
+- quotes are not required around keys or any _bare_ string that do not contain spaces or special characters
 - comments are allowed, though not preserved when using [`from_nuon`]
 
 ## Example