diff --git a/test/cctest/node_test_fixture.h b/test/cctest/node_test_fixture.h
index bbc46986ebe922..d5be613c0bd105 100644
--- a/test/cctest/node_test_fixture.h
+++ b/test/cctest/node_test_fixture.h
@@ -61,7 +61,6 @@ class NodeTestFixture : public ::testing::Test {
   node::MultiIsolatePlatform* Platform() const { return platform_; }
 
  protected:
-  v8::Isolate::CreateParams params_;
   v8::Isolate* isolate_;
 
   ~NodeTestFixture() {
@@ -73,6 +72,7 @@ class NodeTestFixture : public ::testing::Test {
     platform_ = new node::NodePlatform(8, nullptr);
     v8::V8::InitializePlatform(platform_);
     v8::V8::Initialize();
+    v8::Isolate::CreateParams params_;
     params_.array_buffer_allocator = allocator_.get();
     isolate_ = v8::Isolate::New(params_);
   }