diff --git a/src/allmydata/web/check_results.py b/src/allmydata/web/check_results.py
index c109966e5..4051e1379 100644
--- a/src/allmydata/web/check_results.py
+++ b/src/allmydata/web/check_results.py
@@ -98,7 +98,7 @@ class ResultsBase(object):
             pathstring = "<root>"
         return pathstring
 
-    def _render_results(self, ctx, cr):
+    def _render_results(self, req, cr):
         assert ICheckResults(cr)
         c = self.client
         sb = c.get_storage_broker()