diff --git a/src/node.cc b/src/node.cc
index 25e1c045b92ab8..47476bda5a57d4 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -3125,6 +3125,12 @@ MultiIsolatePlatform* CreatePlatform(
 }
 
 
+MultiIsolatePlatform* InitializeV8Platform(int thread_pool_size) {
+  v8_platform.Initialize(thread_pool_size);
+  return v8_platform.Platform();
+}
+
+
 void FreePlatform(MultiIsolatePlatform* platform) {
   delete platform;
 }
@@ -3344,8 +3350,7 @@ int Start(int argc, char** argv) {
   V8::SetEntropySource(crypto::EntropySource);
 #endif  // HAVE_OPENSSL
 
-  v8_platform.Initialize(
-      per_process_opts->v8_thread_pool_size);
+  InitializeV8Platform(per_process_opts->v8_thread_pool_size);
   V8::Initialize();
   performance::performance_v8_start = PERFORMANCE_NOW();
   v8_initialized = true;
diff --git a/src/node.h b/src/node.h
index 50a34cc8bec9ca..f47605a91e2e99 100644
--- a/src/node.h
+++ b/src/node.h
@@ -285,6 +285,7 @@ NODE_EXTERN MultiIsolatePlatform* GetMainThreadMultiIsolatePlatform();
 NODE_EXTERN MultiIsolatePlatform* CreatePlatform(
     int thread_pool_size,
     v8::TracingController* tracing_controller);
+MultiIsolatePlatform* InitializeV8Platform(int thread_pool_size);
 NODE_EXTERN void FreePlatform(MultiIsolatePlatform* platform);
 
 NODE_EXTERN void EmitBeforeExit(Environment* env);
diff --git a/test/cctest/node_test_fixture.h b/test/cctest/node_test_fixture.h
index 4a729be09c2d0b..775a211f54380a 100644
--- a/test/cctest/node_test_fixture.h
+++ b/test/cctest/node_test_fixture.h
@@ -70,9 +70,9 @@ class NodeTestFixture : public ::testing::Test {
     tracing_controller.reset(new v8::TracingController());
     node::tracing::TraceEventHelper::SetTracingController(
         tracing_controller.get());
-    platform.reset(new node::NodePlatform(4, nullptr));
     CHECK_EQ(0, uv_loop_init(&current_loop));
-    v8::V8::InitializePlatform(platform.get());
+    platform.reset(static_cast<node::NodePlatform*>(
+          node::InitializeV8Platform(4)));
     v8::V8::Initialize();
   }
 
@@ -88,10 +88,8 @@ class NodeTestFixture : public ::testing::Test {
   virtual void SetUp() {
     allocator = ArrayBufferUniquePtr(node::CreateArrayBufferAllocator(),
                                      &node::FreeArrayBufferAllocator);
-    isolate_ = NewIsolate(allocator.get());
+    isolate_ = NewIsolate(allocator.get(), &current_loop);
     CHECK_NE(isolate_, nullptr);
-    platform->RegisterIsolate(isolate_, &current_loop);
-    v8::Isolate::Initialize(isolate_, params);
   }
 
   virtual void TearDown() {