diff --git a/beacon_chain/spec/datatypes/electra.nim b/beacon_chain/spec/datatypes/electra.nim
index 13e0ff39c..f625487b3 100644
--- a/beacon_chain/spec/datatypes/electra.nim
+++ b/beacon_chain/spec/datatypes/electra.nim
@@ -68,8 +68,7 @@ type
     signature*: TrustedSig
 
   # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.0/specs/electra/beacon-chain.md#attesterslashing
-  AttesterSlashing* {.
-      sszProfile: StableAttesterSlashing.} = object
+  AttesterSlashing* = object
     attestation_1*: IndexedAttestation  # [Modified in Electra:EIP7549]
     attestation_2*: IndexedAttestation  # [Modified in Electra:EIP7549]
 
diff --git a/beacon_chain/spec/datatypes/stable.nim b/beacon_chain/spec/datatypes/stable.nim
index ed2ac9d98..f6964e7ad 100644
--- a/beacon_chain/spec/datatypes/stable.nim
+++ b/beacon_chain/spec/datatypes/stable.nim
@@ -123,8 +123,7 @@ type
     blob_kzg_commitments*: Opt[KzgCommitments]
     consolidations*: Opt[List[SignedConsolidation, Limit MAX_CONSOLIDATIONS]]
 
-  StableBeaconState* {.
-      sszStableContainer: MAX_BEACON_STATE_FIELDS.} = object
+  StableBeaconState* {.sszStableContainer: MAX_BEACON_STATE_FIELDS.} = object
     # Versioning
     genesis_time*: Opt[uint64]
     genesis_validators_root*: Opt[Eth2Digest]
@@ -146,7 +145,7 @@ type
     eth1_data*: Opt[Eth1Data]
     eth1_data_votes*: Opt[HashList[Eth1Data,
       Limit(EPOCHS_PER_ETH1_VOTING_PERIOD * SLOTS_PER_EPOCH)]]
-    eth1_deposit_index*: uint64
+    eth1_deposit_index*: Opt[uint64]
 
     # Registry
     validators*: Opt[HashList[Validator, Limit VALIDATOR_REGISTRY_LIMIT]]