diff --git a/lib/impure/nre/private/util.nim b/lib/impure/nre/private/util.nim
index 00fd40fac9..253bfada78 100644
--- a/lib/impure/nre/private/util.nim
+++ b/lib/impure/nre/private/util.nim
@@ -1,3 +1,4 @@
+## INTERNAL FILE FOR USE ONLY BY nre.nim.
 import tables
 
 proc fget*[K, V](self: Table[K, V], key: K): V =