diff --git a/src/allmydata/scripts/admin.py b/src/allmydata/scripts/admin.py
index 6a24614c0..eceb9a55a 100644
--- a/src/allmydata/scripts/admin.py
+++ b/src/allmydata/scripts/admin.py
@@ -198,7 +198,7 @@ def add_grid_manager_cert(options):
             options['name'],
             cert_path.path,
         )
-        print(msg, file=options.parent.parent.stderr)
+        print(msg, file=options.stderr)
         return 1
 
     config.set_config("storage", "grid_management", "True")
@@ -210,7 +210,7 @@ def add_grid_manager_cert(options):
 
     cert_count = len(config.enumerate_section("grid_manager_certificates"))
     print("There are now {} certificates".format(cert_count),
-          file=options.parent.parent.stderr)
+          file=options.stderr)
 
     return 0