diff --git a/modules/core/graph.js b/modules/core/graph.js
index 9bfbd42f9..060f29cbd 100644
--- a/modules/core/graph.js
+++ b/modules/core/graph.js
@@ -34,11 +34,6 @@ coreGraph.prototype = {
     entity: function(id) {
         var entity = this.entities[id];
 
-        //https://github.com/openstreetmap/iD/issues/3973#issuecomment-307052376
-        if (!entity) {
-            entity = this.entities.__proto__[id];  // eslint-disable-line no-proto
-        }
-
         if (!entity) {
             throw new Error('entity ' + id + ' not found');
         }