diff --git a/man/i3-msg.man b/man/i3-msg.man
index 6b548d36..2f6c2aab 100644
--- a/man/i3-msg.man
+++ b/man/i3-msg.man
@@ -24,7 +24,8 @@ workspaces.
 
 get_outputs::
 Gets the current outputs. The reply will be a JSON-encoded list of outputs (see
-the reply section).
+the reply section of docs/ipc, e.g. at
+http://i3wm.org/docs/ipc.html#_receiving_replies_from_i3).
 
 get_tree::
 Gets the layout tree. i3 uses a tree as data structure which includes every