diff --git a/lib/_debugger.js b/lib/_debugger.js
index ed71c668f316b7..518f8ee28a9a76 100644
--- a/lib/_debugger.js
+++ b/lib/_debugger.js
@@ -173,7 +173,7 @@ Client.prototype._addHandle = function(desc) {
 
   this.handles[desc.handle] = desc;
 
-  if (desc.type == 'script') {
+  if (desc.type === 'script') {
     this._addScript(desc);
   }
 };