diff --git a/src/node.cc b/src/node.cc
index 9ac528a85d..cb37fef255 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -2633,6 +2633,7 @@ int Start(int argc, char *argv[]) {
   argv = Init(argc, argv);
 
   v8::V8::Initialize();
+  v8::Locker locker;
   v8::HandleScope handle_scope;
 
   // Create the one and only Context.