diff --git a/lib/6to5/traverse/scope.js b/lib/6to5/traverse/scope.js
index 3edcb92fee..4ff2a7d948 100644
--- a/lib/6to5/traverse/scope.js
+++ b/lib/6to5/traverse/scope.js
@@ -140,7 +140,7 @@ Scope.prototype.inferType = function (node) {
   }
 
   if (t.isCallExpression(target)) {
-    target = target.callee;
+    // todo: need to resolve this to a return type
   }
 
   if (t.isMemberExpression(target)) {