diff --git a/djangoapps/courseware/module_render.py b/djangoapps/courseware/module_render.py
index de8364b752..250a4ea055 100644
--- a/djangoapps/courseware/module_render.py
+++ b/djangoapps/courseware/module_render.py
@@ -143,6 +143,7 @@ def render_x_module(user, request, xml_module, module_object_preload):
 
     # special extra information about each problem, only for users who are staff 
     if user.is_staff:
+        module_id = xml_module.get('id')
         histogram = grade_histogram(module_id)
         render_histogram = len(histogram) > 0
         content=content+render_to_string("staff_problem_info.html", {'xml':etree.tostring(xml_module),