diff --git a/pallets/collator-selection/src/mock.rs b/pallets/collator-selection/src/mock.rs
index 600d4bc12c..830435b502 100644
--- a/pallets/collator-selection/src/mock.rs
+++ b/pallets/collator-selection/src/mock.rs
@@ -26,7 +26,7 @@ use sp_core::H256;
 use sp_runtime::{
 	testing::{Header, UintAuthorityId},
 	traits::{BlakeTwo256, IdentityLookup, OpaqueKeys},
-	RuntimeAppPublic,
+	RuntimeAppPublic, Perbill,
 };
 
 type UncheckedExtrinsic = frame_system::mocking::MockUncheckedExtrinsic<Test>;
@@ -167,6 +167,7 @@ impl pallet_session::SessionHandler<u64> for TestSessionHandler {
 parameter_types! {
 	pub const Offset: u64 = 0;
 	pub const Period: u64 = 10;
+	pub const DisabledValidatorsThreshold: Perbill = Perbill::from_percent(17);
 }
 
 impl pallet_session::Config for Test {
@@ -179,6 +180,7 @@ impl pallet_session::Config for Test {
 	type SessionManager = CollatorSelection;
 	type SessionHandler = TestSessionHandler;
 	type Keys = MockSessionKeys;
+	type DisabledValidatorsThreshold = DisabledValidatorsThreshold;
 	type WeightInfo = ();
 }