diff --git a/lms/envs/common.py b/lms/envs/common.py
index 324bb82216..c9c53fd034 100644
--- a/lms/envs/common.py
+++ b/lms/envs/common.py
@@ -90,7 +90,11 @@ MITX_FEATURES = {
 
     # Give a UI to show a student's submission history in a problem by the
     # Staff Debug tool.
-    'ENABLE_STUDENT_HISTORY_VIEW': True
+    'ENABLE_STUDENT_HISTORY_VIEW': True,
+
+    # Turn on a page that lets staff enter Python code to be run in the
+    # sandbox, for testing whether it's enabled properly.
+    'ENABLE_DEBUG_RUN_PYTHON': False,
 }
 
 # Used for A/B testing
diff --git a/lms/urls.py b/lms/urls.py
index dc558d6a54..dc0d820278 100644
--- a/lms/urls.py
+++ b/lms/urls.py
@@ -358,9 +358,10 @@ urlpatterns += (
     url(r'^comm/foldit_ops', 'foldit.views.foldit_ops', name="foldit_ops"),
 )
 
-urlpatterns += (
-    url(r'^debug/run_python', 'debug.views.run_python'),
-)
+if settings.MITX_FEATURES.get('ENABLE_DEBUG_RUN_PYTHON'):
+    urlpatterns += (
+        url(r'^debug/run_python', 'debug.views.run_python'),
+    )
 
 urlpatterns = patterns(*urlpatterns)