diff --git a/beacon_chain/spec/eip7594_helpers.nim b/beacon_chain/spec/eip7594_helpers.nim
index da15c6dca..08a06def3 100644
--- a/beacon_chain/spec/eip7594_helpers.nim
+++ b/beacon_chain/spec/eip7594_helpers.nim
@@ -327,7 +327,7 @@ proc verify_data_column_sidecar_kzg_proofs*(sidecar: DataColumnSidecar): Result[
 # https://github.com/ethereum/consensus-specs/blob/5f48840f4d768bf0e0a8156a3ed06ec333589007/specs/_features/eip7594/p2p-interface.md#verify_data_column_sidecar_inclusion_proof
 proc verify_data_column_sidecar_inclusion_proof*(sidecar: DataColumnSidecar): Result[void, string] =
   # Verify if the given KZG commitments are included in the beacon block
-  let gindex = 27.GeneralizedIndex
+  let gindex = kzg_commitment_inclusion_proof_gindex(sidecar.index)
   if not is_valid_merkle_branch(
     hash_tree_root(sidecar.kzg_commitments),
     sidecar.kzg_commitments_inclusion_proof,