diff --git a/package.json b/package.json
index 20b054ae..ece1b1b7 100644
--- a/package.json
+++ b/package.json
@@ -21,5 +21,6 @@
     "bin": {
         "uglifyjs" : "bin/uglifyjs"
     },
+    "main": "./tools/node",
     "scripts": {"test": "node test/run-tests.js"}
 }