diff --git a/bin/millau/node/src/chain_spec.rs b/bin/millau/node/src/chain_spec.rs
index 9cd01167e1..d18634eb98 100644
--- a/bin/millau/node/src/chain_spec.rs
+++ b/bin/millau/node/src/chain_spec.rs
@@ -202,7 +202,7 @@ fn testnet_genesis(
 			balances: endowed_accounts.iter().cloned().map(|k| (k, 1 << 50)).collect(),
 		},
 		aura: AuraConfig { authorities: Vec::new() },
-		beefy: BeefyConfig { authorities: Vec::new(), genesis_block: Some(0) },
+		beefy: BeefyConfig::default(),
 		grandpa: GrandpaConfig { authorities: Vec::new() },
 		sudo: SudoConfig { key: Some(root_key) },
 		session: SessionConfig {
diff --git a/bin/rialto/node/src/chain_spec.rs b/bin/rialto/node/src/chain_spec.rs
index 6d6d21fc14..345778755a 100644
--- a/bin/rialto/node/src/chain_spec.rs
+++ b/bin/rialto/node/src/chain_spec.rs
@@ -213,7 +213,7 @@ fn testnet_genesis(
 			authorities: Vec::new(),
 			epoch_config: Some(rialto_runtime::BABE_GENESIS_EPOCH_CONFIG),
 		},
-		beefy: BeefyConfig { authorities: Vec::new(), genesis_block: Some(0) },
+		beefy: BeefyConfig::default(),
 		grandpa: GrandpaConfig { authorities: Vec::new() },
 		sudo: SudoConfig { key: Some(root_key) },
 		session: SessionConfig {