diff --git a/bsip-0040.md b/bsip-0040.md
index 73f6f69..6c31e69 100644
--- a/bsip-0040.md
+++ b/bsip-0040.md
@@ -178,7 +178,7 @@ Notes: The implementation must not differentiate on which operation the custom a
 # Milestones
 We propose do split the implmentation into two milestones:
 
-1. Implementation of basic functionaliy to allow custom active permissions and authorities, including `any`, `none`, `lt, le, gt, ge` and `length` `asserts`
+1. Implementation of basic functionaliy to allow custom active permissions and authorities, including `any`, `none`, `lt, le, gt, ge` and `length` `asserts`. If deemed necessary by developpers, reduce to only allow one key or one account for every `custom active authority`
 2. Evaluation of stateful and more sophisticated asserts in terms of performance and if positive, implementation of `limit`, `limit_monthly` and `contains_only` `asserts`
 
 This approach allows as well to add other asserts at a later stage (with a new BSIP).