diff --git a/graphene_django/settings.py b/graphene_django/settings.py
index 7cd750a..e5fad78 100644
--- a/graphene_django/settings.py
+++ b/graphene_django/settings.py
@@ -28,7 +28,7 @@ except ImportError:
 DEFAULTS = {
     "SCHEMA": None,
     "SCHEMA_OUTPUT": "schema.json",
-    "SCHEMA_INDENT": None,
+    "SCHEMA_INDENT": 2,
     "MIDDLEWARE": (),
     # Set to True if the connection fields must have
     # either the first or last argument
diff --git a/graphene_django/tests/test_command.py b/graphene_django/tests/test_command.py
index 2ed4ce0..fa78aec 100644
--- a/graphene_django/tests/test_command.py
+++ b/graphene_django/tests/test_command.py
@@ -11,7 +11,7 @@ def test_generate_file_on_call_graphql_schema(savefile_mock, settings):
 
 
 @patch('json.dump')
-def test_files_are_sorted(dump_mock):
+def test_files_are_canonical(dump_mock):
     open_mock = mock_open()
     with patch('graphene_django.management.commands.graphql_schema.open', open_mock):
         management.call_command('graphql_schema', schema='')
@@ -20,3 +20,4 @@ def test_files_are_sorted(dump_mock):
 
     dump_mock.assert_called_once()
     assert dump_mock.call_args[1]["sort_keys"], "json.mock() should be used to sort the output"
+    assert dump_mock.call_args[1]["indent"] > 0, "output should be pretty-printed by default"