diff --git a/src/node.cc b/src/node.cc
index fa9c3626aa95f3..d51537f5ffb366 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -4279,12 +4279,13 @@ static void StartNodeInstance(void* arg) {
     if (instance_data->use_debug_agent())
       StartDebug(env, debug_wait_connect);
 
+    env->set_trace_sync_io(trace_sync_io);
+
     {
       Environment::AsyncCallbackScope callback_scope(env);
       LoadEnvironment(env);
     }
 
-    env->set_trace_sync_io(trace_sync_io);
 
     // Enable debugger
     if (instance_data->use_debug_agent())