diff --git a/oyster/web.py b/oyster/web.py
index 494d644..1372cd0 100644
--- a/oyster/web.py
+++ b/oyster/web.py
@@ -87,7 +87,7 @@ def tracked():
 
 @app.route('/tracked/<id>')
 def tracked_view(id):
-    doc = client.db.tracked.find_one({'_id': id})
+    doc = client.db.tracked.find_one({'_id': pymongo.objectid.ObjectId(id)})
     return json.dumps(doc, cls=JSONEncoder)