diff --git a/docs/topics/request-response.rst b/docs/topics/request-response.rst
index 17eb63064..89e570028 100644
--- a/docs/topics/request-response.rst
+++ b/docs/topics/request-response.rst
@@ -685,6 +685,8 @@ Response objects
     .. attribute:: Response.ip_address
 
         The IP address of the server from which the Response originated.
+        This attribute is currently only populated by the HTTP 1.1 download
+        handler, i.e. for ``http(s)`` responses.
 
     .. method:: Response.copy()