diff --git a/core/src/block.rs b/core/src/block.rs
index 789082227b..f6ab94bedf 100644
--- a/core/src/block.rs
+++ b/core/src/block.rs
@@ -93,9 +93,9 @@ pub struct ExecutedBlock {
 }
 
 impl ExecutedBlock {
-    fn new(state: TopLevelState) -> ExecutedBlock {
+    fn new(state: TopLevelState, parent: &Header) -> ExecutedBlock {
         ExecutedBlock {
-            header: Default::default(),
+            header: parent.generate_child(),
             state,
             transactions: Default::default(),
             invoices: Default::default(),
@@ -132,17 +132,13 @@ impl<'x> OpenBlock<'x> {
         author: Address,
         extra_data: Bytes,
     ) -> Result<Self, Error> {
-        let number = parent.number() + 1;
         let state = TopLevelState::from_existing(db, *parent.state_root()).map_err(StateError::from)?;
         let mut r = OpenBlock {
-            block: ExecutedBlock::new(state),
+            block: ExecutedBlock::new(state, parent),
             engine,
         };
 
-        r.block.header.set_parent_hash(parent.hash());
-        r.block.header.set_number(number);
         r.block.header.set_author(author);
-        r.block.header.set_timestamp_now(parent.timestamp());
         r.block.header.set_extra_data(extra_data);
         r.block.header.note_dirty();
 
diff --git a/core/src/header.rs b/core/src/header.rs
index 893dcf3680..8d20afc972 100644
--- a/core/src/header.rs
+++ b/core/src/header.rs
@@ -261,6 +261,17 @@ impl Header {
     pub fn rlp_blake(&self, with_seal: &Seal) -> H256 {
         blake256(&self.rlp(with_seal))
     }
+
+    pub fn generate_child(&self) -> Self {
+        let mut header = Header::default();
+
+        header.set_parent_hash(self.hash());
+        header.set_number(self.number() + 1);
+        header.set_timestamp_now(self.timestamp());
+        header.note_dirty();
+
+        header
+    }
 }
 
 impl Decodable for Header {
diff --git a/core/src/miner/miner.rs b/core/src/miner/miner.rs
index 4bcb12397c..902ae08d34 100644
--- a/core/src/miner/miner.rs
+++ b/core/src/miner/miner.rs
@@ -254,7 +254,7 @@ impl Miner {
         default_origin: TxOrigin,
         mem_pool: &mut MemPool,
     ) -> Vec<Result<TransactionImportResult, Error>> {
-        let best_block_header = client.best_block_header().decode();
+        let fake_header = client.best_block_header().decode().generate_child();
         let current_block_number = client.chain_info().best_block_number;
         let current_timestamp = client.chain_info().best_block_timestamp;
         let mut inserted = Vec::with_capacity(transactions.len());
@@ -274,8 +274,8 @@ impl Miner {
                 }
                 match self
                     .engine
-                    .verify_transaction_basic(&tx, &best_block_header)
-                    .and_then(|_| self.engine.verify_transaction_unordered(tx, &best_block_header))
+                    .verify_transaction_basic(&tx, &fake_header)
+                    .and_then(|_| self.engine.verify_transaction_unordered(tx, &fake_header))
                 {
                     Err(e) => {
                         cdebug!(MINER, "Rejected transaction {:?} with invalid signature: {:?}", hash, e);
@@ -283,7 +283,7 @@ impl Miner {
                     }
                     Ok(tx) => {
                         // This check goes here because verify_transaction takes SignedTransaction parameter
-                        self.engine.machine().verify_transaction(&tx, &best_block_header, client, false)?;
+                        self.engine.machine().verify_transaction(&tx, &fake_header, client, false)?;
 
                         let origin = self
                             .accounts
diff --git a/test/src/e2e.long/expiration.test.ts b/test/src/e2e.long/expiration.test.ts
index d5cc18ead9..1359322c96 100644
--- a/test/src/e2e.long/expiration.test.ts
+++ b/test/src/e2e.long/expiration.test.ts
@@ -51,7 +51,7 @@ describe("TransferAsset expiration test", function() {
 
             // 3. Send TransferAsset transactions (which should not processed)
             const seq = await node.sdk.rpc.chain.getSeq(faucetAddress);
-            startTime = Math.round(new Date().getTime() / 1000);
+            startTime = Math.round(new Date().getTime() / 1000) + 5;
             for (let i = 0; i < numTx; i++) {
                 const recipient = await node.createP2PKHAddress();
                 const tx = node.sdk.core.createTransferAssetTransaction({
@@ -95,7 +95,7 @@ describe("TransferAsset expiration test", function() {
                 const isExpired = bestBlockTimestamp > startTime + numTx - i;
                 expect(isResultsEmpty).to.be.equal(isExpired);
             }
-        }).timeout(10_000);
+        }).timeout(15_000);
     });
 
     afterEach(async function() {