diff --git a/packages/beacon-node/src/chain/validation/attestation.ts b/packages/beacon-node/src/chain/validation/attestation.ts
index 438f8284a15..df57a685501 100644
--- a/packages/beacon-node/src/chain/validation/attestation.ts
+++ b/packages/beacon-node/src/chain/validation/attestation.ts
@@ -523,6 +523,7 @@ async function validateAttestationNoSignatureCheck(
     ? attestationOrCache.attestation
     : !isForkPostElectra(fork)
       ? {
+          // Aggregation bits are already asserted above to not be null
           aggregationBits: aggregationBits as BitArray,
           data: attData,
           signature,