diff --git a/builtin_complete.cpp b/builtin_complete.cpp
index 691fad2b7..b11ad7bf6 100644
--- a/builtin_complete.cpp
+++ b/builtin_complete.cpp
@@ -339,7 +339,7 @@ static int builtin_complete(parser_t &parser, wchar_t **argv)
 
         int opt = wgetopt_long(argc,
                                argv,
-                               L"a:c:p:s:l:o:d:frxeuAn:C::h",
+                               L"a:c:p:s:l:o:d:frxeuAn:C::w:h",
                                long_options,
                                &opt_index);
         if (opt == -1)