diff --git a/core/txpool/txpool_test.go b/core/txpool/txpool_test.go
index ff8dfb9348..45e38e8a71 100644
--- a/core/txpool/txpool_test.go
+++ b/core/txpool/txpool_test.go
@@ -1080,7 +1080,6 @@ func TestQueueGlobalLimitingNoLocals(t *testing.T) {
 
 func testQueueGlobalLimiting(t *testing.T, nolocals bool) {
 	t.Helper()
-	t.Parallel()
 
 	// Create the pool to test the limit enforcement with
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
diff --git a/eth/handler_eth_test.go b/eth/handler_eth_test.go
index 83d5d14291..4d6b8d9c14 100644
--- a/eth/handler_eth_test.go
+++ b/eth/handler_eth_test.go
@@ -98,7 +98,7 @@ func TestForkIDSplit68(t *testing.T) {
 }
 
 func testForkIDSplit(t *testing.T, protocol uint) {
-	t.Parallel()
+	t.Helper()
 
 	var (
 		engine = ethash.NewFaker()
@@ -268,7 +268,7 @@ func TestRecvTransactions68(t *testing.T) {
 }
 
 func testRecvTransactions(t *testing.T, protocol uint) {
-	t.Parallel()
+	t.Helper()
 
 	// Create a message handler, configure it to accept transactions and watch them
 	handler := newTestHandler()
@@ -442,7 +442,7 @@ func TestTransactionPropagation68(t *testing.T) {
 }
 
 func testTransactionPropagation(t *testing.T, protocol uint) {
-	t.Parallel()
+	t.Helper()
 
 	// Create a source handler to send transactions from and a number of sinks
 	// to receive them. We need multiple sinks since a one-to-one peering would
@@ -774,7 +774,7 @@ func TestBroadcastMalformedBlock68(t *testing.T) {
 }
 
 func testBroadcastMalformedBlock(t *testing.T, protocol uint) {
-	t.Parallel()
+	t.Helper()
 
 	// Create a source handler to broadcast blocks from and a number of sinks
 	// to receive them.
diff --git a/eth/protocols/eth/handler_test.go b/eth/protocols/eth/handler_test.go
index a921bd673a..663b3096e2 100644
--- a/eth/protocols/eth/handler_test.go
+++ b/eth/protocols/eth/handler_test.go
@@ -165,7 +165,7 @@ func TestGetBlockHeaders68(t *testing.T) {
 }
 
 func testGetBlockHeaders(t *testing.T, protocol uint) {
-	t.Parallel()
+	t.Helper()
 
 	backend := newTestBackend(maxHeadersServe + 15)
 	defer backend.close()
@@ -365,8 +365,6 @@ func TestGetBlockBodies68(t *testing.T) {
 }
 
 func testGetBlockBodies(t *testing.T, protocol uint) {
-	t.Parallel()
-
 	gen := func(n int, g *core.BlockGen) {
 		if n%2 == 0 {
 			w := &types.Withdrawal{
@@ -613,7 +611,7 @@ func TestGetBlockReceipts68(t *testing.T) {
 }
 
 func testGetBlockReceipts(t *testing.T, protocol uint) {
-	t.Parallel()
+	t.Helper()
 
 	// Define three accounts to simulate transactions with
 	acc1Key, _ := crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a")
diff --git a/internal/flags/flags_test.go b/internal/flags/flags_test.go
index a74d7e8c49..5cc6ce0a2a 100644
--- a/internal/flags/flags_test.go
+++ b/internal/flags/flags_test.go
@@ -22,9 +22,8 @@ import (
 	"testing"
 )
 
+// nolint:paralleltest
 func TestPathExpansion(t *testing.T) {
-	t.Parallel()
-
 	user, _ := user.Current()
 
 	var tests map[string]string
diff --git a/node/node_auth_test.go b/node/node_auth_test.go
index 1fc75b8e06..b6e7bed0da 100644
--- a/node/node_auth_test.go
+++ b/node/node_auth_test.go
@@ -207,7 +207,6 @@ func TestAuthEndpoints(t *testing.T) {
 	}
 
 	for _, testCase := range testCases {
-		t.Parallel()
 		t.Run(testCase.name, testCase.Run)
 	}
 }