diff --git a/docs/index.rst b/docs/index.rst
index 9f6c9c82e..28a97370a 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -478,7 +478,8 @@ completions happens after the call to :file:`compinit`.
 fish
 ~~~~~~~~
 
-Add the following to your :file:`~/.config/fish/config.fish`
+For versions of fish earlier than 3.0.0, add the following to your
+:file:`~/.config/fish/config.fish`. Later versions source completions by default.
 
 .. code-block:: sh