diff --git a/index.js b/index.js
index 0364545f..e7da4558 100644
--- a/index.js
+++ b/index.js
@@ -40,7 +40,6 @@ function monkeypatch() {
   var analyze = escope.analyze;
   escope.analyze = function (ast, opts) {
     opts.ecmaVersion = 6;
-    opts.sourceType = "module";
     return analyze.call(this, ast, opts)
   };
 }