diff --git a/src/env.cc b/src/env.cc
index 3dbc56b7c56bee..8426148ea74d79 100644
--- a/src/env.cc
+++ b/src/env.cc
@@ -332,8 +332,8 @@ Environment::Environment(IsolateData* isolate_data,
 
   if (tracing::AgentWriterHandle* writer = GetTracingAgentWriter()) {
     trace_state_observer_ = std::make_unique<TrackingTraceStateObserver>(this);
-    TracingController* tracing_controller = writer->GetTracingController();
-    tracing_controller->AddTraceStateObserver(trace_state_observer_.get());
+    if (TracingController* tracing_controller = writer->GetTracingController())
+      tracing_controller->AddTraceStateObserver(trace_state_observer_.get());
   }
 
   destroy_async_id_list_.reserve(512);
@@ -409,8 +409,8 @@ Environment::~Environment() {
   if (trace_state_observer_) {
     tracing::AgentWriterHandle* writer = GetTracingAgentWriter();
     CHECK_NOT_NULL(writer);
-    TracingController* tracing_controller = writer->GetTracingController();
-    tracing_controller->RemoveTraceStateObserver(trace_state_observer_.get());
+    if (TracingController* tracing_controller = writer->GetTracingController())
+      tracing_controller->RemoveTraceStateObserver(trace_state_observer_.get());
   }
 
   delete[] heap_statistics_buffer_;
diff --git a/src/node.cc b/src/node.cc
index 80916e5244aa36..2812c477925196 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -1015,7 +1015,8 @@ InitializationResult InitializeOncePerProcess(int argc, char** argv) {
   V8::SetEntropySource(crypto::EntropySource);
 #endif  // HAVE_OPENSSL
 
-  InitializeV8Platform(per_process::cli_options->v8_thread_pool_size);
+  per_process::v8_platform.Initialize(
+      per_process::cli_options->v8_thread_pool_size);
   V8::Initialize();
   performance::performance_v8_start = PERFORMANCE_NOW();
   per_process::v8_initialized = true;
diff --git a/test/cctest/node_test_fixture.h b/test/cctest/node_test_fixture.h
index cd669d23da3384..e71d800c25f858 100644
--- a/test/cctest/node_test_fixture.h
+++ b/test/cctest/node_test_fixture.h
@@ -81,9 +81,13 @@ class NodeTestFixture : public ::testing::Test {
 
     tracing_agent = std::make_unique<node::tracing::Agent>();
     node::tracing::TraceEventHelper::SetAgent(tracing_agent.get());
+    node::tracing::TracingController* tracing_controller =
+            tracing_agent->GetTracingController();
     CHECK_EQ(0, uv_loop_init(&current_loop));
-    platform.reset(static_cast<node::NodePlatform*>(
-          node::InitializeV8Platform(4)));
+    static constexpr int kV8ThreadPoolSize = 4;
+    platform.reset(
+        new node::NodePlatform(kV8ThreadPoolSize, tracing_controller));
+    v8::V8::InitializePlatform(platform.get());
     v8::V8::Initialize();
   }
 
@@ -99,7 +103,7 @@ class NodeTestFixture : public ::testing::Test {
   void SetUp() override {
     allocator = ArrayBufferUniquePtr(node::CreateArrayBufferAllocator(),
                                      &node::FreeArrayBufferAllocator);
-    isolate_ = NewIsolate(allocator.get(), &current_loop);
+    isolate_ = NewIsolate(allocator.get(), &current_loop, platform.get());
     CHECK_NE(isolate_, nullptr);
     isolate_->Enter();
   }