From 67d62025d93c4fa62c44f4d79c3415a004762adf Mon Sep 17 00:00:00 2001
From: fradamt <104826920+fradamt@users.noreply.github.com>
Date: Mon, 27 Jun 2022 14:20:25 +0200
Subject: [PATCH] fix typo and specify something

- committee_index is used as an input to compute_subnet_for_attestation but it's not previously defined
- attestation.data.committee_index is incorrect, the field is "index"
---
 specs/phase0/validator.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/specs/phase0/validator.md b/specs/phase0/validator.md
index 1b7124e92..54b344791 100644
--- a/specs/phase0/validator.md
+++ b/specs/phase0/validator.md
@@ -260,7 +260,7 @@ A validator should plan for future assignments by noting their assigned attestat
 slot and joining the committee index attestation subnet related to their committee assignment.
 
 Specifically a validator should:
-* Call `get_committee_assignment(state, next_epoch, validator_index)` when checking for next epoch assignments.
+* Call `_, committee_index, _ = get_committee_assignment(state, next_epoch, validator_index)` when checking for next epoch assignments.
 * Calculate the committees per slot for the next epoch: `committees_per_slot = get_committee_count_per_slot(state, next_epoch)`
 * Calculate the subnet index: `subnet_id = compute_subnet_for_attestation(committees_per_slot, slot, committee_index)`
 * Find peers of the pubsub topic `beacon_attestation_{subnet_id}`.
@@ -510,7 +510,7 @@ Finally, the validator broadcasts `attestation` to the associated attestation su
 
 The `subnet_id` for the `attestation` is calculated with:
 - Let `committees_per_slot = get_committee_count_per_slot(state, attestation.data.target.epoch)`.
-- Let `subnet_id = compute_subnet_for_attestation(committees_per_slot, attestation.data.slot, attestation.data.committee_index)`.
+- Let `subnet_id = compute_subnet_for_attestation(committees_per_slot, attestation.data.slot, attestation.data.index)`.
 
 ```python
 def compute_subnet_for_attestation(committees_per_slot: uint64, slot: Slot, committee_index: CommitteeIndex) -> uint64: