diff -r 02acb2f9c908 Doc/reference/compound_stmts.rst
--- a/Doc/reference/compound_stmts.rst	Sun Dec 25 16:23:42 2016 +0200
+++ b/Doc/reference/compound_stmts.rst	Thu Dec 29 14:32:42 2016 +0200
@@ -473,7 +473,7 @@
    dotted_name: `identifier` ("." `identifier`)*
    parameter_list: `defparameter` ("," `defparameter`)* ["," [`parameter_list_starargs`]]
                  : | `parameter_list_starargs`
-   parameter_list_starargs: "*" [`parameter`] ("," `defparameter`)* ["," ["**" `parameter` [","]]]
+   parameter_list_starargs: "*" [`parameter`] ("," `defparameter`)+ ["," ["**" `parameter` [","]]]
                          : | "**" `parameter` [","]
    parameter: `identifier` [":" `expression`]
    defparameter: `parameter` ["=" `expression`]