wscript: add missing entry to help output

Fixes #2344.

1 files changed, 1 insertions, 1 deletions

diff --git a/wscript b/wscript
index 6f04545995..3acda833b8 100644
--- a/wscript
+++ b/wscript
@@ -877,7 +877,7 @@ def options(opt):
     group.add_option('--lua',
         type    = 'string',
         dest    = 'LUA_VER',
-        help    = "select Lua package which should be autodetected. Choices: 51 51deb 51fbsd 52 52deb 52fbsd luajit")
+        help    = "select Lua package which should be autodetected. Choices: 51 51deb 51fbsd 52 52deb 52arch 52fbsd luajit")
 
 @conf
 def is_optimization(ctx):