1 files changed, 3 insertions, 0 deletions
diff --git a/src/node.js b/src/node.js
index fe2edabe83..81bf90d1ac 100644
--- a/src/node.js
+++ b/src/node.js
@@ -24,6 +24,9 @@
 // This file is invoked by node::Load in src/node.cc, and responsible for
 // bootstrapping the node.js core. Special caution is given to the performance
 // of the startup process, so many dependencies are invoked lazily.
+
+'use strict';
+
 (function(process) {
   this.global = this;