diff --git a/etc/xo/subsystem-list b/etc/xo/subsystem-list
index 2d02227b..48473e50 100644
--- a/etc/xo/subsystem-list
+++ b/etc/xo/subsystem-list
@@ -18,6 +18,7 @@ xo-object2
 xo-gc
 xo-type
 xo-procedure2
+xo-numeric
 xo-allocutil
 xo-alloc
 xo-object