diff --git a/crates/nu-protocol/src/eval_const.rs b/crates/nu-protocol/src/eval_const.rs
index 15ad479e19..b387de4120 100644
--- a/crates/nu-protocol/src/eval_const.rs
+++ b/crates/nu-protocol/src/eval_const.rs
@@ -17,6 +17,8 @@ use std::{
 };
 
 /// Create a Value for `$nu`.
+// Note: When adding new constants to $nu, please update the doc at https://nushell.sh/book/special_variables.html
+// or at least add a TODO/reminder issue in nushell.github.io so we don't lose track of it.
 pub(crate) fn create_nu_constant(engine_state: &EngineState, span: Span) -> Value {
     fn canonicalize_path(engine_state: &EngineState, path: &Path) -> PathBuf {
         #[allow(deprecated)]