diff --git a/doc/api/http.md b/doc/api/http.md
index 208dc8fa760a60..f9d3d1e52f99cc 100644
--- a/doc/api/http.md
+++ b/doc/api/http.md
@@ -1544,6 +1544,7 @@ added: v0.3.6
 
 * `options` {Object | string} Accepts the same `options` as
   [`http.request()`][], with the `method` always set to `GET`.
+  Properties that are inherited from the prototype are ignored.
 * `callback` {Function}
 * Returns: {http.ClientRequest}