diff --git a/doc/api/fs.md b/doc/api/fs.md
index fb16501033978e..caba07afb39370 100644
--- a/doc/api/fs.md
+++ b/doc/api/fs.md
@@ -5873,7 +5873,8 @@ added: v0.1.93
 The path to the file the stream is reading from as specified in the first
 argument to `fs.createReadStream()`. If `path` is passed as a string, then
 `readStream.path` will be a string. If `path` is passed as a {Buffer}, then
-`readStream.path` will be a {Buffer}.
+`readStream.path` will be a {Buffer}. If `fd` is specified, then
+`readStream.path` will be `undefined`.
 
 #### `readStream.pending`
 <!-- YAML