diff --git a/specs/validator/0_beacon-chain-validator.md b/specs/validator/0_beacon-chain-validator.md
index 58d87d450..188a6a291 100644
--- a/specs/validator/0_beacon-chain-validator.md
+++ b/specs/validator/0_beacon-chain-validator.md
@@ -322,13 +322,13 @@ Set `attestation.data = attestation_data` where `attestation_data` is the `Attes
 
 ##### Aggregation bits
 
-- Let `attestation.aggregation_bits` be a `Bitlist[MAX_INDICES_PER_ATTESTATION]` where the bits at the index in the aggregated validator's `committee` is set to `0b1`.
+- Let `attestation.aggregation_bits` be a `Bitlist[MAX_VALIDATORS_PER_COMMITTEE]` where the bits at the index in the aggregated validator's `committee` is set to `0b1`.
 
 *Note*: Calling `get_attesting_indices(state, attestation.data, attestation.aggregation_bits)` should return a list of length equal to 1, containing `validator_index`.
 
 ##### Custody bits
 
-- Let `attestation.custody_bits` be a `Bitlist[MAX_INDICES_PER_ATTESTATION]` filled with zeros of length `len(committee)`.
+- Let `attestation.custody_bits` be a `Bitlist[MAX_VALIDATORS_PER_COMMITTEE]` filled with zeros of length `len(committee)`.
 
 *Note*: This is a stub for Phase 0.