diff --git a/pkg/tso/keyspace_group_manager.go b/pkg/tso/keyspace_group_manager.go
index cdefa503a88..22723aabf65 100644
--- a/pkg/tso/keyspace_group_manager.go
+++ b/pkg/tso/keyspace_group_manager.go
@@ -322,7 +322,6 @@ type KeyspaceGroupManager struct {
 
 	// tsoServiceID is the service ID of the TSO service, registered in the service discovery
 	tsoServiceID *discovery.ServiceRegistryEntry
-	clusterID    uint64
 	etcdClient   *clientv3.Client
 	httpClient   *http.Client
 	// electionNamePrefix is the name prefix to generate the unique name of a participant,
@@ -417,7 +416,6 @@ func NewKeyspaceGroupManager(
 		ctx:                          ctx,
 		cancel:                       cancel,
 		tsoServiceID:                 tsoServiceID,
-		clusterID:                    clusterID,
 		etcdClient:                   etcdClient,
 		httpClient:                   httpClient,
 		electionNamePrefix:           electionNamePrefix,
diff --git a/pkg/tso/keyspace_group_manager_test.go b/pkg/tso/keyspace_group_manager_test.go
index bab789f0e0f..b851904f4aa 100644
--- a/pkg/tso/keyspace_group_manager_test.go
+++ b/pkg/tso/keyspace_group_manager_test.go
@@ -1225,8 +1225,8 @@ func waitForPrimariesServing(
 func (suite *keyspaceGroupManagerTestSuite) TestRegisterAllocatorConflict() {
 	re := suite.Require()
 
-	legacySvcRootPath := keypath.LegacyRootPath(suite.ClusterID)
-	allocatorKeyPrefix := keypath.GlobalTSOAllocatorsPrefix(suite.ClusterID)
+	legacySvcRootPath := keypath.LegacyRootPath()
+	allocatorKeyPrefix := keypath.GlobalTSOAllocatorsPrefix()
 	legacySvcStorage := endpoint.NewStorageEndpoint(kv.NewEtcdKVBase(suite.etcdClient, legacySvcRootPath), nil)
 	m := member.NewMember(suite.servers[0], suite.etcdClient, uint64(suite.servers[0].Server.ID()))
 	am := NewAllocatorManager(suite.ctx, suite.etcdClient, constant.DefaultKeyspaceGroupID, m, legacySvcRootPath, legacySvcStorage, suite.cfg, allocatorKeyPrefix, path.Join(allocatorKeyPrefix, "pd"))
@@ -1271,8 +1271,8 @@ func (suite *keyspaceGroupManagerTestSuite) TestRegisterAllocatorConflict() {
 	go func() {
 		defer wg1.Done()
 
-		legacySvcRootPath := keypath.LegacyRootPath(suite.ClusterID)
-		allocatorKeyPrefix := keypath.GlobalTSOAllocatorsPrefix(suite.ClusterID)
+		legacySvcRootPath := keypath.LegacyRootPath()
+		allocatorKeyPrefix := keypath.GlobalTSOAllocatorsPrefix()
 		legacySvcStorage := endpoint.NewStorageEndpoint(kv.NewEtcdKVBase(suite.etcdClient, legacySvcRootPath), nil)
 		m := member.NewMember(suite.servers[0], suite.etcdClient, uint64(suite.servers[0].Server.ID()))
 		am := NewAllocatorManager(suite.ctx, suite.etcdClient, constant.DefaultKeyspaceGroupID, m, legacySvcRootPath, legacySvcStorage, suite.cfg, allocatorKeyPrefix, path.Join(allocatorKeyPrefix, "pd"))