diff --git a/pallets/inflation/src/tests.rs b/pallets/inflation/src/tests.rs
index 5323e68298..b3cde26614 100644
--- a/pallets/inflation/src/tests.rs
+++ b/pallets/inflation/src/tests.rs
@@ -106,7 +106,7 @@ impl frame_system::Config for Test {
 
 parameter_types! {
 	pub TreasuryAccountId: u64 = 1234;
-	pub const InflationBlockInterval: u32 = 10; // every time per how many blocks inflation is applied
+	pub const InflationBlockInterval: u32 = 100; // every time per how many blocks inflation is applied
 	pub static MockBlockNumberProvider: u32 = 0;
 }
 
diff --git a/tests/src/inflation.seqtest.ts b/tests/src/inflation.seqtest.ts
index b28f937e39..2b9ec1b83e 100644
--- a/tests/src/inflation.seqtest.ts
+++ b/tests/src/inflation.seqtest.ts
@@ -24,8 +24,12 @@ describe('integration test: Inflation', () => {
   let superuser: IKeyringPair;
 
   before(async () => {
-    await usingPlaygrounds(async (_, privateKey) => {
+    await usingPlaygrounds(async (helper, privateKey) => {
       superuser = await privateKey('//Alice');
+      const api = helper.getApi();
+
+      const relayBlock = (await api.query.parachainSystem.lastRelayChainBlockNumber()).toNumber();
+      await expect(helper.executeExtrinsic(superuser, 'api.tx.sudo.sudo', [helper.constructApiCall('api.tx.inflation.startInflation', [relayBlock])])).to.not.be.rejected;
     });
   });
 
@@ -38,10 +42,6 @@ describe('integration test: Inflation', () => {
     // Make sure superuser can't start inflation without explicit sudo
     await expect(helper.executeExtrinsic(superuser, 'api.tx.inflation.startInflation', [1])).to.be.rejectedWith(/BadOrigin/);
 
-    // Start inflation on relay block 1 (Alice is sudo)
-    const tx = helper.constructApiCall('api.tx.inflation.startInflation', [1]);
-    await expect(helper.executeExtrinsic(superuser, 'api.tx.sudo.sudo', [tx])).to.not.be.rejected;
-
     const blockInterval = (helper.getApi().consts.inflation.inflationBlockInterval as any).toBigInt();
     const totalIssuanceStart = ((await helper.callRpc('api.query.inflation.startingYearTotalIssuance', [])) as any).toBigInt();
     const blockInflation = (await helper.callRpc('api.query.inflation.blockInflation', []) as any).toBigInt();
@@ -63,7 +63,6 @@ describe('integration test: Inflation', () => {
     const blockInterval = await api.consts.inflation.inflationBlockInterval.toNumber();
 
     const relayBlock = (await api.query.parachainSystem.lastRelayChainBlockNumber()).toNumber();
-    await helper.executeExtrinsic(superuser, 'api.tx.sudo.sudo', [helper.constructApiCall('api.tx.inflation.startInflation', [relayBlock])]);
     const blockInflation = (await helper.callRpc('api.query.inflation.blockInflation', []) as any).toBigInt();
     const startBlock = (relayBlock + blockInterval) - (relayBlock % blockInterval) + 1;
 
@@ -71,7 +70,7 @@ describe('integration test: Inflation', () => {
 
     const treasuryBalanceBefore = await helper.balance.getSubstrate(TREASURY);
 
-    await helper.wait.forRelayBlockNumber(startBlock + blockInterval);
+    await helper.wait.forRelayBlockNumber(startBlock + blockInterval + 1);
 
     const treasuryBalanceAfter = await helper.balance.getSubstrate(TREASURY);
     expect(Number(treasuryBalanceAfter)).to.be.eqls(Number(treasuryBalanceBefore + blockInflation));