diff --git a/polkadot-parachains/statemine/src/lib.rs b/polkadot-parachains/statemine/src/lib.rs
index a719f5d97a..a13bb9e452 100644
--- a/polkadot-parachains/statemine/src/lib.rs
+++ b/polkadot-parachains/statemine/src/lib.rs
@@ -636,10 +636,12 @@ impl cumulus_pallet_dmp_queue::Config for Runtime {
 	type ExecuteOverweightOrigin = EnsureRoot<AccountId>;
 }
 
+use sp_runtime::Perbill;
 parameter_types! {
 	pub const Period: u32 = 6 * HOURS;
 	pub const Offset: u32 = 0;
 	pub const MaxAuthorities: u32 = 100_000;
+	pub const DisabledValidatorsThreshold: Perbill = Perbill::from_percent(17);
 }
 
 impl pallet_session::Config for Runtime {
@@ -653,6 +655,7 @@ impl pallet_session::Config for Runtime {
 	// Essentially just Aura, but lets be pedantic.
 	type SessionHandler = <SessionKeys as sp_runtime::traits::OpaqueKeys>::KeyTypeIdProviders;
 	type Keys = SessionKeys;
+	type DisabledValidatorsThreshold = DisabledValidatorsThreshold;
 	type WeightInfo = weights::pallet_session::WeightInfo<Runtime>;
 }
 
diff --git a/polkadot-parachains/statemint/src/lib.rs b/polkadot-parachains/statemint/src/lib.rs
index 075706f256..e8bec0f600 100644
--- a/polkadot-parachains/statemint/src/lib.rs
+++ b/polkadot-parachains/statemint/src/lib.rs
@@ -599,10 +599,12 @@ impl cumulus_pallet_dmp_queue::Config for Runtime {
 	type ExecuteOverweightOrigin = EnsureRoot<AccountId>;
 }
 
+use sp_runtime::Perbill;
 parameter_types! {
 	pub const Period: u32 = 6 * HOURS;
 	pub const Offset: u32 = 0;
 	pub const MaxAuthorities: u32 = 100_000;
+	pub const DisabledValidatorsThreshold: Perbill = Perbill::from_percent(17);
 }
 
 impl pallet_session::Config for Runtime {
@@ -616,6 +618,7 @@ impl pallet_session::Config for Runtime {
 	// Essentially just Aura, but lets be pedantic.
 	type SessionHandler = <SessionKeys as sp_runtime::traits::OpaqueKeys>::KeyTypeIdProviders;
 	type Keys = SessionKeys;
+	type DisabledValidatorsThreshold = DisabledValidatorsThreshold;
 	type WeightInfo = weights::pallet_session::WeightInfo<Runtime>;
 }
 
diff --git a/polkadot-parachains/westmint/src/lib.rs b/polkadot-parachains/westmint/src/lib.rs
index f9bef70d25..08efd67182 100644
--- a/polkadot-parachains/westmint/src/lib.rs
+++ b/polkadot-parachains/westmint/src/lib.rs
@@ -598,10 +598,12 @@ impl cumulus_pallet_dmp_queue::Config for Runtime {
 	type ExecuteOverweightOrigin = EnsureRoot<AccountId>;
 }
 
+use sp_runtime::Perbill;
 parameter_types! {
 	pub const Period: u32 = 6 * HOURS;
 	pub const Offset: u32 = 0;
 	pub const MaxAuthorities: u32 = 100_000;
+	pub const DisabledValidatorsThreshold: Perbill = Perbill::from_percent(17);
 }
 
 impl pallet_session::Config for Runtime {
@@ -615,6 +617,7 @@ impl pallet_session::Config for Runtime {
 	// Essentially just Aura, but lets be pedantic.
 	type SessionHandler = <SessionKeys as sp_runtime::traits::OpaqueKeys>::KeyTypeIdProviders;
 	type Keys = SessionKeys;
+	type DisabledValidatorsThreshold = DisabledValidatorsThreshold;
 	type WeightInfo = weights::pallet_session::WeightInfo<Runtime>;
 }