diff --git a/polkadot/runtime/common/src/paras_registrar/benchmarking.rs b/polkadot/runtime/common/src/paras_registrar/benchmarking.rs
index 95df8a96957673fd48a428163c4874041526f80c..d98e46ada83d99523d0152e20ec45753d325b035 100644
--- a/polkadot/runtime/common/src/paras_registrar/benchmarking.rs
+++ b/polkadot/runtime/common/src/paras_registrar/benchmarking.rs
@@ -25,7 +25,7 @@ use polkadot_primitives::{MAX_CODE_SIZE, MAX_HEAD_DATA_SIZE, MIN_CODE_SIZE};
 use polkadot_runtime_parachains::{paras, shared, Origin as ParaOrigin};
 use sp_runtime::traits::Bounded;
 
-use frame_benchmarking::{account, benchmarks, whitelisted_caller};
+use frame_benchmarking::v2::*;
 
 fn assert_last_event<T: Config>(generic_event: <T as Config>::RuntimeEvent) {
 	let events = frame_system::Pallet::<T>::events();
@@ -52,7 +52,7 @@ fn register_para<T: Config>(id: u32) -> ParaId {
 		frame_system::Origin::<T>::Root.into(),
 		validation_code,
 	));
-	return para
+	return para;
 }
 
 fn para_origin(id: u32) -> ParaOrigin {
@@ -65,29 +65,42 @@ fn next_scheduled_session<T: Config>() {
 	paras::Pallet::<T>::test_on_new_session();
 }
 
-benchmarks! {
-	where_clause { where ParaOrigin: Into<<T as frame_system::Config>::RuntimeOrigin> }
+#[benchmarks(
+		where ParaOrigin: Into<<T as frame_system::Config>::RuntimeOrigin>,
+	)]
+mod benchmarks {
+	use super::*;
 
-	reserve {
+	#[benchmark]
+	fn reserve() -> Result<(), BenchmarkError> {
 		let caller: T::AccountId = whitelisted_caller();
 		T::Currency::make_free_balance_be(&caller, BalanceOf::<T>::max_value());
-	}: _(RawOrigin::Signed(caller.clone()))
-	verify {
-		assert_last_event::<T>(Event::<T>::Reserved { para_id: LOWEST_PUBLIC_ID, who: caller }.into());
+
+		#[extrinsic_call]
+		_(RawOrigin::Signed(caller.clone()));
+
+		assert_last_event::<T>(
+			Event::<T>::Reserved { para_id: LOWEST_PUBLIC_ID, who: caller }.into(),
+		);
 		assert!(Paras::<T>::get(LOWEST_PUBLIC_ID).is_some());
 		assert_eq!(paras::Pallet::<T>::lifecycle(LOWEST_PUBLIC_ID), None);
+
+		Ok(())
 	}
 
-	register {
+	#[benchmark]
+	fn register() -> Result<(), BenchmarkError> {
 		let para = LOWEST_PUBLIC_ID;
 		let genesis_head = Registrar::<T>::worst_head_data();
 		let validation_code = Registrar::<T>::worst_validation_code();
 		let caller: T::AccountId = whitelisted_caller();
 		T::Currency::make_free_balance_be(&caller, BalanceOf::<T>::max_value());
 		assert_ok!(Registrar::<T>::reserve(RawOrigin::Signed(caller.clone()).into()));
-	}: _(RawOrigin::Signed(caller.clone()), para, genesis_head, validation_code.clone())
-	verify {
-		assert_last_event::<T>(Event::<T>::Registered{ para_id: para, manager: caller }.into());
+
+		#[extrinsic_call]
+		_(RawOrigin::Signed(caller.clone()), para, genesis_head, validation_code.clone());
+
+		assert_last_event::<T>(Event::<T>::Registered { para_id: para, manager: caller }.into());
 		assert_eq!(paras::Pallet::<T>::lifecycle(para), Some(ParaLifecycle::Onboarding));
 		assert_ok!(polkadot_runtime_parachains::paras::Pallet::<T>::add_trusted_validation_code(
 			frame_system::Origin::<T>::Root.into(),
@@ -95,16 +108,21 @@ benchmarks! {
 		));
 		next_scheduled_session::<T>();
 		assert_eq!(paras::Pallet::<T>::lifecycle(para), Some(ParaLifecycle::Parathread));
+
+		Ok(())
 	}
 
-	force_register {
+	#[benchmark]
+	fn force_register() -> Result<(), BenchmarkError> {
 		let manager: T::AccountId = account("manager", 0, 0);
 		let deposit = 0u32.into();
 		let para = ParaId::from(69);
 		let genesis_head = Registrar::<T>::worst_head_data();
 		let validation_code = Registrar::<T>::worst_validation_code();
-	}: _(RawOrigin::Root, manager.clone(), deposit, para, genesis_head, validation_code.clone())
-	verify {
+
+		#[extrinsic_call]
+		_(RawOrigin::Root, manager.clone(), deposit, para, genesis_head, validation_code.clone());
+
 		assert_last_event::<T>(Event::<T>::Registered { para_id: para, manager }.into());
 		assert_eq!(paras::Pallet::<T>::lifecycle(para), Some(ParaLifecycle::Onboarding));
 		assert_ok!(polkadot_runtime_parachains::paras::Pallet::<T>::add_trusted_validation_code(
@@ -113,18 +131,26 @@ benchmarks! {
 		));
 		next_scheduled_session::<T>();
 		assert_eq!(paras::Pallet::<T>::lifecycle(para), Some(ParaLifecycle::Parathread));
+
+		Ok(())
 	}
 
-	deregister {
+	#[benchmark]
+	fn deregister() -> Result<(), BenchmarkError> {
 		let para = register_para::<T>(LOWEST_PUBLIC_ID.into());
 		next_scheduled_session::<T>();
 		let caller: T::AccountId = whitelisted_caller();
-	}: _(RawOrigin::Signed(caller), para)
-	verify {
+
+		#[extrinsic_call]
+		_(RawOrigin::Signed(caller), para);
+
 		assert_last_event::<T>(Event::<T>::Deregistered { para_id: para }.into());
+
+		Ok(())
 	}
 
-	swap {
+	#[benchmark]
+	fn swap() -> Result<(), BenchmarkError> {
 		// On demand parachain
 		let parathread = register_para::<T>(LOWEST_PUBLIC_ID.into());
 		let parachain = register_para::<T>((LOWEST_PUBLIC_ID + 1).into());
@@ -143,25 +169,41 @@ benchmarks! {
 
 		let caller: T::AccountId = whitelisted_caller();
 		Registrar::<T>::swap(parachain_origin.into(), parachain, parathread)?;
-	}: _(RawOrigin::Signed(caller.clone()), parathread, parachain)
-	verify {
+
+		#[extrinsic_call]
+		_(RawOrigin::Signed(caller.clone()), parathread, parachain);
+
 		next_scheduled_session::<T>();
 		// Swapped!
 		assert_eq!(paras::Pallet::<T>::lifecycle(parachain), Some(ParaLifecycle::Parathread));
 		assert_eq!(paras::Pallet::<T>::lifecycle(parathread), Some(ParaLifecycle::Parachain));
+
+		Ok(())
 	}
 
-	schedule_code_upgrade {
-		let b in MIN_CODE_SIZE .. MAX_CODE_SIZE;
+	#[benchmark]
+	fn schedule_code_upgrade(
+		b: Linear<MIN_CODE_SIZE, MAX_CODE_SIZE>,
+	) -> Result<(), BenchmarkError> {
 		let new_code = ValidationCode(vec![0; b as usize]);
 		let para_id = ParaId::from(1000);
-	}: _(RawOrigin::Root, para_id, new_code)
 
-	set_current_head {
-		let b in 1 .. MAX_HEAD_DATA_SIZE;
+		#[extrinsic_call]
+		_(RawOrigin::Root, para_id, new_code);
+
+		Ok(())
+	}
+
+	#[benchmark]
+	fn set_current_head(b: Linear<1, MAX_HEAD_DATA_SIZE>) -> Result<(), BenchmarkError> {
 		let new_head = HeadData(vec![0; b as usize]);
 		let para_id = ParaId::from(1000);
-	}: _(RawOrigin::Root, para_id, new_head)
+
+		#[extrinsic_call]
+		_(RawOrigin::Root, para_id, new_head);
+
+		Ok(())
+	}
 
 	impl_benchmark_test_suite!(
 		Registrar,
diff --git a/polkadot/runtime/common/src/paras_registrar/mod.rs b/polkadot/runtime/common/src/paras_registrar/mod.rs
index aed0729c9d517e820af013f3a9725db37d720939..e7b2e3776f08508a6752d84cfe1fafdaa8111cab 100644
--- a/polkadot/runtime/common/src/paras_registrar/mod.rs
+++ b/polkadot/runtime/common/src/paras_registrar/mod.rs
@@ -318,7 +318,7 @@ pub mod pallet {
 			// early, since swapping the same id would otherwise be a noop.
 			if id == other {
 				PendingSwap::<T>::remove(id);
-				return Ok(())
+				return Ok(());
 			}
 
 			// Sanity check that `id` is even a para.
@@ -346,7 +346,7 @@ pub mod pallet {
 					// data.
 					T::OnSwap::on_swap(id, other);
 				} else {
-					return Err(Error::<T>::CannotSwap.into())
+					return Err(Error::<T>::CannotSwap.into());
 				}
 				Self::deposit_event(Event::<T>::Swapped { para_id: id, other_id: other });
 				PendingSwap::<T>::remove(other);