diff --git a/substrate/frame/staking/src/migrations.rs b/substrate/frame/staking/src/migrations.rs
index c52501cbcef4..30941eefca1d 100644
--- a/substrate/frame/staking/src/migrations.rs
+++ b/substrate/frame/staking/src/migrations.rs
@@ -74,7 +74,7 @@ pub mod v17 {
 
 			let old_disabled_validators = v16::DisabledValidators::<T>::get();
 			// BoundedVec with MaxWinners limit, this should always work
-			let disabled_validators_maybe = WeakBoundedVec::try_from(old_disabled_validators);
+			let disabled_validators_maybe = BoundedVec::try_from(old_disabled_validators);
 			match disabled_validators_maybe {
 				Ok(disabled_validators) => DisabledValidators::<T>::set(disabled_validators),
 				Err(_) => {
diff --git a/substrate/frame/staking/src/mock.rs b/substrate/frame/staking/src/mock.rs
index 08ba7efd3918..aa4cf003be22 100644
--- a/substrate/frame/staking/src/mock.rs
+++ b/substrate/frame/staking/src/mock.rs
@@ -325,7 +325,7 @@ pub struct ExtBuilder {
 	nominate: bool,
 	validator_count: u32,
 	minimum_validator_count: u32,
-	invulnerables: Vec<AccountId>,
+	invulnerables: BoundedVec<AccountId, <Test as Config>::MaxInvulnerables>,
 	has_stakers: bool,
 	initialize_first_session: bool,
 	pub min_nominator_bond: Balance,
@@ -377,7 +377,7 @@ impl ExtBuilder {
 		self
 	}
 	pub fn invulnerables(mut self, invulnerables: Vec<AccountId>) -> Self {
-		self.invulnerables = BoundedVec::force_from(invulnerables).unwrap();
+		self.invulnerables = BoundedVec::try_from(invulnerables).unwrap();
 		self
 	}
 	pub fn session_per_era(self, length: SessionIndex) -> Self {