diff --git a/substrate/frame/nicks/src/lib.rs b/substrate/frame/nicks/src/lib.rs
index 91918ce846..6d9c15fd3d 100644
--- a/substrate/frame/nicks/src/lib.rs
+++ b/substrate/frame/nicks/src/lib.rs
@@ -43,11 +43,10 @@ pub use pallet::*;
 use sp_runtime::traits::{StaticLookup, Zero};
 use sp_std::prelude::*;
 
-type BalanceOf<T> =
-	<<T as Config>::Currency as Currency<<T as frame_system::Config>::AccountId>>::Balance;
-type NegativeImbalanceOf<T> = <<T as Config>::Currency as Currency<
-	<T as frame_system::Config>::AccountId,
->>::NegativeImbalance;
+type AccountIdOf<T> = <T as frame_system::Config>::AccountId;
+type BalanceOf<T> = <<T as Config>::Currency as Currency<AccountIdOf<T>>>::Balance;
+type NegativeImbalanceOf<T> =
+	<<T as Config>::Currency as Currency<AccountIdOf<T>>>::NegativeImbalance;
 
 #[frame_support::pallet]
 pub mod pallet {
@@ -265,9 +264,9 @@ mod tests {
 			NodeBlock = Block,
 			UncheckedExtrinsic = UncheckedExtrinsic,
 		{
-			System: frame_system::{Pallet, Call, Config, Storage, Event<T>},
-			Balances: pallet_balances::{Pallet, Call, Storage, Config<T>, Event<T>},
-			Nicks: pallet_nicks::{Pallet, Call, Storage, Event<T>},
+			System: frame_system,
+			Balances: pallet_balances,
+			Nicks: pallet_nicks,
 		}
 	);