diff --git a/core/blockchain_test.go b/core/blockchain_test.go
index 876d662f74..49c38282bd 100644
--- a/core/blockchain_test.go
+++ b/core/blockchain_test.go
@@ -2345,7 +2345,7 @@ func testInsertKnownChainData(t *testing.T, typ string, scheme string) {
 			}
 		}
 	} else {
-		inserter = func(blocks []*types.Block, receipts []types.Receipts) error {
+		inserter = func(blocks []*types.Block, _ []types.Receipts) error {
 			_, err := chain.InsertChain(blocks)
 			return err
 		}
@@ -2519,7 +2519,7 @@ func testInsertKnownChainDataWithMerging(t *testing.T, typ string, mergeHeight i
 			}
 		}
 	} else {
-		inserter = func(blocks []*types.Block, receipts []types.Receipts) error {
+		inserter = func(blocks []*types.Block, _ []types.Receipts) error {
 			i, err := chain.InsertChain(blocks)
 			if err != nil {
 				return fmt.Errorf("index %d: %w", i, err)
@@ -2724,7 +2724,7 @@ func testReorgToShorterRemovesCanonMappingHeaderChain(t *testing.T, scheme strin
 }
 
 // Benchmarks large blocks with value transfers to non-existing accounts
-func benchmarkLargeNumberOfValueToNonexisting(b *testing.B, numTxs, numBlocks int, recipientFn func(uint64) common.Address, dataFn func(uint64) []byte) {
+func benchmarkLargeNumberOfValueToNonexisting(b *testing.B, numTxs, numBlocks int, recipientFn func(uint64) common.Address, _ func(uint64) []byte) {
 	var (
 		signer          = types.HomesteadSigner{}
 		testBankKey, _  = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")