diff --git a/polkadot/cli/src/cli.yml b/polkadot/cli/src/cli.yml
index 81ea904959..3f37d79239 100644
--- a/polkadot/cli/src/cli.yml
+++ b/polkadot/cli/src/cli.yml
@@ -65,6 +65,6 @@ args:
   - chain:
       long: chain
       value_name: CHAIN_SPEC
-      help: Specify the chain specification (one of dev, local or poc-1)
+      help: Specify the chain specification (one of dev, local or poc-2)
       takes_value: true
 subcommands:
diff --git a/polkadot/cli/src/lib.rs b/polkadot/cli/src/lib.rs
index d26ebf7556..90b0655cd4 100644
--- a/polkadot/cli/src/lib.rs
+++ b/polkadot/cli/src/lib.rs
@@ -110,7 +110,7 @@ impl substrate_rpc::system::SystemApi for Configuration {
 		Ok(match self.0.chain_spec {
 			ChainSpec::Development => "dev",
 			ChainSpec::LocalTestnet => "local",
-			ChainSpec::PoC1Testnet => "poc-1",
+			ChainSpec::PoC2Testnet => "poc-2",
 		}.into())
 	}
 }
@@ -174,14 +174,14 @@ pub fn run<I, T>(args: I) -> error::Result<()> where
 	match matches.value_of("chain") {
 		Some("dev") => config.chain_spec = ChainSpec::Development,
 		Some("local") => config.chain_spec = ChainSpec::LocalTestnet,
-		Some("poc-1") => config.chain_spec = ChainSpec::PoC1Testnet,
+		Some("poc-2") => config.chain_spec = ChainSpec::PoC2Testnet,
 		None => (),
 		Some(unknown) => panic!("Invalid chain name: {}", unknown),
 	}
 	info!("Chain specification: {}", match config.chain_spec {
 		ChainSpec::Development => "Development",
 		ChainSpec::LocalTestnet => "Local Testnet",
-		ChainSpec::PoC1Testnet => "PoC-1 Testnet",
+		ChainSpec::PoC2Testnet => "PoC-2 Testnet",
 	});
 
 	config.roles = role;
diff --git a/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.compact.wasm b/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.compact.wasm
index 35f1cfd18b..e340c3df12 100644
Binary files a/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.compact.wasm and b/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.compact.wasm differ
diff --git a/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.wasm b/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.wasm
index 7bc43f97d5..e081e7ca2b 100755
Binary files a/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.wasm and b/polkadot/runtime/wasm/target/wasm32-unknown-unknown/release/polkadot_runtime.wasm differ
diff --git a/polkadot/service/src/config.rs b/polkadot/service/src/config.rs
index 16b39631b9..c6edbe141c 100644
--- a/polkadot/service/src/config.rs
+++ b/polkadot/service/src/config.rs
@@ -28,8 +28,8 @@ pub enum ChainSpec {
 	Development,
 	/// Whatever the current runtime is, with simple Alice/Bob auths.
 	LocalTestnet,
-	/// The PoC-1 testnet.
-	PoC1Testnet,
+	/// The PoC-2 testnet.
+	PoC2Testnet,
 }
 
 /// Service configuration.
diff --git a/polkadot/service/src/lib.rs b/polkadot/service/src/lib.rs
index 5113193a36..436479d0a5 100644
--- a/polkadot/service/src/lib.rs
+++ b/polkadot/service/src/lib.rs
@@ -141,7 +141,7 @@ pub struct ChainConfig {
 	boot_nodes: Vec<String>,
 }
 
-fn poc_1_testnet_config() -> ChainConfig {
+fn poc_2_testnet_config() -> ChainConfig {
 	let initial_authorities = vec![
 		hex!["82c39b31a2b79a90f8e66e7a77fdb85a4ed5517f2ae39f6a80565e8ecae85cf5"].into(),
 		hex!["4de37a07567ebcbf8c64568428a835269a566723687058e017b6d69db00a77e7"].into(),
@@ -164,7 +164,8 @@ fn poc_1_testnet_config() -> ChainConfig {
 		staking: Some(StakingConfig {
 			current_era: 0,
 			intentions: initial_authorities.clone(),
-			transaction_fee: 100,
+			transaction_base_fee: 100,
+			transaction_byte_fee: 1,
 			balances: endowed_accounts.iter().map(|&k|(k, 1u128 << 60)).collect(),
 			validator_count: 12,
 			sessions_per_era: 24,	// 24 hours per era.
@@ -222,7 +223,8 @@ fn testnet_config(initial_authorities: Vec<AuthorityId>) -> ChainConfig {
 		staking: Some(StakingConfig {
 			current_era: 0,
 			intentions: initial_authorities.clone(),
-			transaction_fee: 1,
+			transaction_base_fee: 1,
+			transaction_byte_fee: 0,
 			balances: endowed_accounts.iter().map(|&k|(k, (1u128 << 60))).collect(),
 			validator_count: 2,
 			sessions_per_era: 5,
@@ -364,7 +366,7 @@ impl<B, E> Service<B, E>
 		let ChainConfig { genesis_config, boot_nodes } = match config.chain_spec {
 			ChainSpec::Development => development_config(),
 			ChainSpec::LocalTestnet => local_testnet_config(),
-			ChainSpec::PoC1Testnet => poc_1_testnet_config(),
+			ChainSpec::PoC2Testnet => poc_2_testnet_config(),
 		};
 		config.network.boot_nodes.extend(boot_nodes);