diff --git a/frame/bounties/src/tests.rs b/frame/bounties/src/tests.rs
index 9fe34b16029cb..0f9f3e68df548 100644
--- a/frame/bounties/src/tests.rs
+++ b/frame/bounties/src/tests.rs
@@ -194,13 +194,12 @@ type TreasuryError = pallet_treasury::Error<Test>;
 type TreasuryError1 = pallet_treasury::Error<Test, Instance1>;
 
 pub fn new_test_ext() -> sp_io::TestExternalities {
-	let mut ext: sp_io::TestExternalities = RuntimeGenesisConfig {
+	let mut ext: sp_io::TestExternalities = BuildStorage::build_storage(&RuntimeGenesisConfig {
 		system: frame_system::GenesisConfig::default(),
 		balances: pallet_balances::GenesisConfig { balances: vec![(0, 100), (1, 98), (2, 1)] },
 		treasury: Default::default(),
 		treasury_1: Default::default(),
-	}
-	.build_storage()
+	})
 	.unwrap()
 	.into();
 	ext.execute_with(|| System::set_block_number(1));
diff --git a/frame/collective/src/tests.rs b/frame/collective/src/tests.rs
index 8d4e0a4a82cd7..057f668a78eb2 100644
--- a/frame/collective/src/tests.rs
+++ b/frame/collective/src/tests.rs
@@ -177,20 +177,20 @@ impl ExtBuilder {
 	}
 
 	pub fn build(self) -> sp_io::TestExternalities {
-		let mut ext: sp_io::TestExternalities = RuntimeGenesisConfig {
-			collective: pallet_collective::GenesisConfig {
-				members: self.collective_members,
-				phantom: Default::default(),
-			},
-			collective_majority: pallet_collective::GenesisConfig {
-				members: vec![1, 2, 3, 4, 5],
-				phantom: Default::default(),
-			},
-			default_collective: Default::default(),
-		}
-		.build_storage()
-		.unwrap()
-		.into();
+		let mut ext: sp_io::TestExternalities =
+			BuildStorage::build_storage(&RuntimeGenesisConfig {
+				collective: pallet_collective::GenesisConfig {
+					members: self.collective_members,
+					phantom: Default::default(),
+				},
+				collective_majority: pallet_collective::GenesisConfig {
+					members: vec![1, 2, 3, 4, 5],
+					phantom: Default::default(),
+				},
+				default_collective: Default::default(),
+			})
+			.unwrap()
+			.into();
 		ext.execute_with(|| System::set_block_number(1));
 		ext
 	}
diff --git a/frame/system/src/mock.rs b/frame/system/src/mock.rs
index b484c22ad4fe4..4500a5f40fc60 100644
--- a/frame/system/src/mock.rs
+++ b/frame/system/src/mock.rs
@@ -126,7 +126,7 @@ pub const CALL: &<Test as Config>::RuntimeCall =
 /// Create new externalities for `System` module tests.
 pub fn new_test_ext() -> sp_io::TestExternalities {
 	let mut ext: sp_io::TestExternalities =
-		RuntimeGenesisConfig::default().build_storage().unwrap().into();
+		BuildStorage::build_storage(&RuntimeGenesisConfig::default()).unwrap().into();
 	// Add to each test the initial weight of a block
 	ext.execute_with(|| {
 		System::register_extra_weight_unchecked(
diff --git a/frame/tips/src/tests.rs b/frame/tips/src/tests.rs
index 25043b413db07..6fe70b7f20b93 100644
--- a/frame/tips/src/tests.rs
+++ b/frame/tips/src/tests.rs
@@ -196,13 +196,12 @@ impl Config<Instance1> for Test {
 }
 
 pub fn new_test_ext() -> sp_io::TestExternalities {
-	let mut ext: sp_io::TestExternalities = RuntimeGenesisConfig {
+	let mut ext: sp_io::TestExternalities = BuildStorage::build_storage(&RuntimeGenesisConfig {
 		system: frame_system::GenesisConfig::default(),
 		balances: pallet_balances::GenesisConfig { balances: vec![(0, 100), (1, 98), (2, 1)] },
 		treasury: Default::default(),
 		treasury_1: Default::default(),
-	}
-	.build_storage()
+	})
 	.unwrap()
 	.into();
 	ext.execute_with(|| System::set_block_number(1));