diff --git a/bridges/bin/millau/node/Cargo.toml b/bridges/bin/millau/node/Cargo.toml
index e31e2c871a508..cbcb2e710c03c 100644
--- a/bridges/bin/millau/node/Cargo.toml
+++ b/bridges/bin/millau/node/Cargo.toml
@@ -12,6 +12,7 @@ license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 [dependencies]
 jsonrpc-core = "15.1.0"
 structopt = "0.3.21"
+serde_json = "1.0.59"
 
 # Bridge dependencies
 
diff --git a/bridges/bin/millau/node/src/chain_spec.rs b/bridges/bin/millau/node/src/chain_spec.rs
index f9e9502da72ba..340b8fd9dffb3 100644
--- a/bridges/bin/millau/node/src/chain_spec.rs
+++ b/bridges/bin/millau/node/src/chain_spec.rs
@@ -67,6 +67,15 @@ pub fn get_authority_keys_from_seed(s: &str) -> (AccountId, AuraId, GrandpaId) {
 impl Alternative {
 	/// Get an actual chain config from one of the alternatives.
 	pub(crate) fn load(self) -> ChainSpec {
+		let properties = Some(
+			serde_json::json!({
+				"tokenDecimals": 9,
+				"tokenSymbol": "MLAU",
+			})
+			.as_object()
+			.expect("Map given; qed")
+			.clone(),
+		);
 		match self {
 			Alternative::Development => ChainSpec::from_genesis(
 				"Development",
@@ -88,7 +97,7 @@ impl Alternative {
 				vec![],
 				None,
 				None,
-				None,
+				properties,
 				None,
 			),
 			Alternative::LocalTestnet => ChainSpec::from_genesis(
@@ -136,7 +145,7 @@ impl Alternative {
 				vec![],
 				None,
 				None,
-				None,
+				properties,
 				None,
 			),
 		}
diff --git a/bridges/bin/rialto/node/Cargo.toml b/bridges/bin/rialto/node/Cargo.toml
index a51ee7a5ab5f2..370985d8ae634 100644
--- a/bridges/bin/rialto/node/Cargo.toml
+++ b/bridges/bin/rialto/node/Cargo.toml
@@ -12,6 +12,7 @@ license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 [dependencies]
 jsonrpc-core = "15.1.0"
 structopt = "0.3.21"
+serde_json = "1.0.59"
 
 # Bridge dependencies
 
diff --git a/bridges/bin/rialto/node/src/chain_spec.rs b/bridges/bin/rialto/node/src/chain_spec.rs
index 732cf1a4b13a2..fb6dc92bf6d45 100644
--- a/bridges/bin/rialto/node/src/chain_spec.rs
+++ b/bridges/bin/rialto/node/src/chain_spec.rs
@@ -19,6 +19,7 @@ use rialto_runtime::{
 	AccountId, AuraConfig, BalancesConfig, BridgeKovanConfig, BridgeRialtoPoAConfig, GenesisConfig, GrandpaConfig,
 	SessionConfig, SessionKeys, Signature, SudoConfig, SystemConfig, WASM_BINARY,
 };
+use serde_json::json;
 use sp_consensus_aura::sr25519::AuthorityId as AuraId;
 use sp_core::{sr25519, Pair, Public};
 use sp_finality_grandpa::AuthorityId as GrandpaId;
@@ -67,6 +68,15 @@ pub fn get_authority_keys_from_seed(s: &str) -> (AccountId, AuraId, GrandpaId) {
 impl Alternative {
 	/// Get an actual chain config from one of the alternatives.
 	pub(crate) fn load(self) -> ChainSpec {
+		let properties = Some(
+			json!({
+				"tokenDecimals": 9,
+				"tokenSymbol": "RLT",
+			})
+			.as_object()
+			.expect("Map given; qed")
+			.clone(),
+		);
 		match self {
 			Alternative::Development => ChainSpec::from_genesis(
 				"Development",
@@ -88,7 +98,7 @@ impl Alternative {
 				vec![],
 				None,
 				None,
-				None,
+				properties,
 				None,
 			),
 			Alternative::LocalTestnet => ChainSpec::from_genesis(
@@ -136,7 +146,7 @@ impl Alternative {
 				vec![],
 				None,
 				None,
-				None,
+				properties,
 				None,
 			),
 		}