diff --git a/beacon_chain/era_db.nim b/beacon_chain/era_db.nim
index b7767be8a7..b32fa013e9 100644
--- a/beacon_chain/era_db.nim
+++ b/beacon_chain/era_db.nim
@@ -220,7 +220,7 @@ proc verify*(f: EraFile, cfg: RuntimeConfig): Result[Eth2Digest, string] =
 
           # Batch-verification more than doubles total verification speed
           sigs.add block_signature_set(
-              getStateField(state[], fork),
+              cfg.forkAtEpoch(slot.epoch),
               getStateField(state[], genesis_validators_root), slot,
               blck[].root, cooked.get(), sig.get())