diff --git a/cumulus/parachains/runtimes/bridge-hubs/bridge-hub-rococo/src/lib.rs b/cumulus/parachains/runtimes/bridge-hubs/bridge-hub-rococo/src/lib.rs
index a872e2327303..7ce300e6e92c 100644
--- a/cumulus/parachains/runtimes/bridge-hubs/bridge-hub-rococo/src/lib.rs
+++ b/cumulus/parachains/runtimes/bridge-hubs/bridge-hub-rococo/src/lib.rs
@@ -1244,55 +1244,61 @@ cumulus_pallet_parachain_system::register_validate_block! {
 #[cfg(test)]
 mod tests {
 	use super::*;
-	use bp_runtime::TransactionEra;
-	use bridge_hub_test_utils::test_header;
 	use codec::Encode;
-
-	pub type TestBlockHeader =
-		sp_runtime::generic::Header<bp_polkadot_core::BlockNumber, bp_polkadot_core::Hasher>;
+	use sp_runtime::{generic::Era, traits::{SignedExtension, Zero}};
 
 	#[test]
 	fn ensure_signed_extension_definition_is_compatible_with_relay() {
-		let payload: SignedExtra = (
-			frame_system::CheckNonZeroSender::new(),
-			frame_system::CheckSpecVersion::new(),
-			frame_system::CheckTxVersion::new(),
-			frame_system::CheckGenesis::new(),
-			frame_system::CheckEra::from(sp_runtime::generic::Era::Immortal),
-			frame_system::CheckNonce::from(10),
-			frame_system::CheckWeight::new(),
-			pallet_transaction_payment::ChargeTransactionPayment::from(10),
-			BridgeRejectObsoleteHeadersAndMessages {},
-			(
-				BridgeRefundBridgeHubRococoMessages::default(),
-				BridgeRefundBridgeHubWococoMessages::default(),
-			),
-		);
-
-		{
-			use bp_bridge_hub_rococo::BridgeHubSignedExtension;
-			let bhr_indirect_payload = bp_bridge_hub_rococo::SignedExtension::from_params(
-				10,
-				10,
-				TransactionEra::Immortal,
-				test_header::<TestBlockHeader>(1).hash(),
-				10,
-				10,
+		use bp_polkadot_core::SuffixedCommonSignedExtensionExt;
+
+		sp_io::TestExternalities::default().execute_with(|| {
+			frame_system::BlockHash::<Runtime>::insert(BlockNumber::zero(), Hash::default());
+			let payload: SignedExtra = (
+				frame_system::CheckNonZeroSender::new(),
+				frame_system::CheckSpecVersion::new(),
+				frame_system::CheckTxVersion::new(),
+				frame_system::CheckGenesis::new(),
+				frame_system::CheckEra::from(Era::Immortal),
+				frame_system::CheckNonce::from(10),
+				frame_system::CheckWeight::new(),
+				pallet_transaction_payment::ChargeTransactionPayment::from(10),
+				BridgeRejectObsoleteHeadersAndMessages,
+				(BridgeRefundBridgeHubRococoMessages::default(), BridgeRefundBridgeHubWococoMessages::default())
 			);
-			assert_eq!(payload.encode(), bhr_indirect_payload.encode());
-		}
 
-		{
-			use bp_bridge_hub_wococo::BridgeHubSignedExtension;
-			let bhw_indirect_payload = bp_bridge_hub_wococo::SignedExtension::from_params(
-				10,
-				10,
-				TransactionEra::Immortal,
-				test_header::<TestBlockHeader>(1).hash(),
-				10,
-				10,
-			);
-			assert_eq!(payload.encode(), bhw_indirect_payload.encode());
-		}
+			{
+				let bhr_indirect_payload = bp_bridge_hub_rococo::SignedExtension::from_params(
+					VERSION.spec_version,
+					VERSION.transaction_version,
+					bp_runtime::TransactionEra::Immortal,
+					System::block_hash(BlockNumber::zero()),
+					10,
+					10,
+					(((), ()), ((), ())),
+				);
+				assert_eq!(payload.encode(), bhr_indirect_payload.encode());
+				assert_eq!(
+					payload.additional_signed().unwrap().encode(),
+					bhr_indirect_payload.additional_signed().unwrap().encode()
+				)
+			}
+
+			{
+				let bhw_indirect_payload = bp_bridge_hub_rococo::SignedExtension::from_params(
+					VERSION.spec_version,
+					VERSION.transaction_version,
+					bp_runtime::TransactionEra::Immortal,
+					System::block_hash(BlockNumber::zero()),
+					10,
+					10,
+					(((), ()), ((), ())),
+				);
+				assert_eq!(payload.encode(), bhw_indirect_payload.encode());
+				assert_eq!(
+					payload.additional_signed().unwrap().encode(),
+					bhw_indirect_payload.additional_signed().unwrap().encode()
+				)
+			}
+		});
 	}
 }