diff --git a/is-whitespace/README.md b/is-whitespace/README.md
index fea0b3d3..c228546b 100644
--- a/is-whitespace/README.md
+++ b/is-whitespace/README.md
@@ -179,6 +179,8 @@ false
 
 [whitespace]: https://en.wikipedia.org/wiki/Whitespace_character
 
+[standard-streams]: https://en.wikipedia.org/wiki/Standard_streams
+
 [mdn-regexp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions
 
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