diff --git a/polkadot/runtime/test-runtime/src/lib.rs b/polkadot/runtime/test-runtime/src/lib.rs
index 71a4580bc56a..62b7c1c8a20c 100644
--- a/polkadot/runtime/test-runtime/src/lib.rs
+++ b/polkadot/runtime/test-runtime/src/lib.rs
@@ -346,6 +346,7 @@ parameter_types! {
 	pub const RewardCurve: &'static PiecewiseLinear<'static> = &REWARD_CURVE;
 	pub const MaxExposurePageSize: u32 = 64;
 	pub const MaxNominators: u32 = 256;
+	// This corresponds to the maximum number of validators
 	pub const MaxAuthorities: u32 = 100_000;
 	pub const OnChainMaxWinners: u32 = u32::MAX;
 	// Unbounded number of election targets and voters.
@@ -400,7 +401,7 @@ impl pallet_staking::Config for Runtime {
 	type DisablingStrategy = pallet_staking::UpToLimitWithReEnablingDisablingStrategy;
 	type MaxInvulnerables = ConstU32<20>;
 	type MaxRewardPagesPerValidator = ConstU32<20>;
-	type MaxValidatorsCount = ConstU32<300>;
+	type MaxValidatorsCount = MaxAuthorities;
 	type MaxDisabledValidators = ConstU32<100>;
 }
 
diff --git a/substrate/bin/node/runtime/src/lib.rs b/substrate/bin/node/runtime/src/lib.rs
index dec45b1de711..7a2dc3388ace 100644
--- a/substrate/bin/node/runtime/src/lib.rs
+++ b/substrate/bin/node/runtime/src/lib.rs
@@ -748,7 +748,7 @@ impl pallet_staking::Config for Runtime {
 	type DisablingStrategy = pallet_staking::UpToLimitWithReEnablingDisablingStrategy;
 	type MaxInvulnerables = ConstU32<20>;
 	type MaxRewardPagesPerValidator = ConstU32<20>;
-	type MaxValidatorsCount = ConstU32<300>;
+	type MaxValidatorsCount = MaxAuthorities;
 	type MaxDisabledValidators = ConstU32<100>;
 }
 
@@ -1485,7 +1485,7 @@ parameter_types! {
 	pub const ImOnlineUnsignedPriority: TransactionPriority = TransactionPriority::max_value();
 	/// We prioritize im-online heartbeats over election solution submission.
 	pub const StakingUnsignedPriority: TransactionPriority = TransactionPriority::max_value() / 2;
-	pub const MaxAuthorities: u32 = 100;
+	pub const MaxAuthorities: u32 = 300;
 	pub const MaxKeys: u32 = 10_000;
 	pub const MaxPeerInHeartbeats: u32 = 10_000;
 }