diff --git a/doc/api/stream.md b/doc/api/stream.md
index 014b2f68b3359b..ce6a80157c5c61 100644
--- a/doc/api/stream.md
+++ b/doc/api/stream.md
@@ -954,7 +954,7 @@ added: v0.9.4
 -->
 
 * `size` {number} Optional argument to specify how much data to read.
-* Returns: {string|Buffer|null}
+* Returns: {string|Buffer|null|any}
 
 The `readable.read()` method pulls some data out of the internal buffer and
 returns it. If no data available to be read, `null` is returned. By default,