diff --git a/doc/saio/swift/proxy-server.conf b/doc/saio/swift/proxy-server.conf
index 124b36c62b..c43c036072 100644
--- a/doc/saio/swift/proxy-server.conf
+++ b/doc/saio/swift/proxy-server.conf
@@ -34,7 +34,6 @@ use = egg:swift#dlo
 
 [filter:slo]
 use = egg:swift#slo
-allow_async_delete = True
 
 [filter:container_sync]
 use = egg:swift#container_sync
diff --git a/etc/proxy-server.conf-sample b/etc/proxy-server.conf-sample
index 0c14d80725..d2db8d7527 100644
--- a/etc/proxy-server.conf-sample
+++ b/etc/proxy-server.conf-sample
@@ -1093,7 +1093,7 @@ use = egg:swift#slo
 # `?multipart-manifest=delete&async=on`. You may want to keep this off if it
 # negatively impacts your expirers; in that case, the deletes will still
 # be done as part of the client request.
-# allow_async_delete = false
+# allow_async_delete = true
 
 # Note: Put after auth and staticweb in the pipeline.
 # If you don't put it in the pipeline, it will be inserted for you.
diff --git a/swift/common/middleware/slo.py b/swift/common/middleware/slo.py
index b4493d4a6a..3493ec6052 100644
--- a/swift/common/middleware/slo.py
+++ b/swift/common/middleware/slo.py
@@ -1103,7 +1103,7 @@ class StaticLargeObject(object):
                  max_manifest_segments=DEFAULT_MAX_MANIFEST_SEGMENTS,
                  max_manifest_size=DEFAULT_MAX_MANIFEST_SIZE,
                  yield_frequency=DEFAULT_YIELD_FREQUENCY,
-                 allow_async_delete=False):
+                 allow_async_delete=True):
         self.conf = conf
         self.app = app
         self.logger = get_logger(conf, log_route='slo')
@@ -1732,7 +1732,7 @@ def filter_factory(global_conf, **local_conf):
     yield_frequency = int(conf.get('yield_frequency',
                                    DEFAULT_YIELD_FREQUENCY))
     allow_async_delete = config_true_value(conf.get('allow_async_delete',
-                                                    'false'))
+                                                    'true'))
 
     register_swift_info('slo',
                         max_manifest_segments=max_manifest_segments,
diff --git a/test/unit/common/middleware/test_slo.py b/test/unit/common/middleware/test_slo.py
index 87c8bce787..3aeb703fad 100644
--- a/test/unit/common/middleware/test_slo.py
+++ b/test/unit/common/middleware/test_slo.py
@@ -4597,7 +4597,7 @@ class TestSwiftInfo(unittest.TestCase):
         self.assertEqual(swift_info['slo'].get('min_segment_size'), 1)
         self.assertEqual(swift_info['slo'].get('max_manifest_size'),
                          mware.max_manifest_size)
-        self.assertIs(swift_info['slo'].get('allow_async_delete'), False)
+        self.assertIs(swift_info['slo'].get('allow_async_delete'), True)
         self.assertEqual(1000, mware.max_manifest_segments)
         self.assertEqual(8388608, mware.max_manifest_size)
         self.assertEqual(1048576, mware.rate_limit_under_size)
@@ -4606,21 +4606,21 @@ class TestSwiftInfo(unittest.TestCase):
         self.assertEqual(10, mware.yield_frequency)
         self.assertEqual(2, mware.concurrency)
         self.assertEqual(2, mware.bulk_deleter.delete_concurrency)
-        self.assertIs(False, mware.allow_async_delete)
+        self.assertIs(True, mware.allow_async_delete)
 
     def test_registered_non_defaults(self):
         conf = dict(
             max_manifest_segments=500, max_manifest_size=1048576,
             rate_limit_under_size=2097152, rate_limit_after_segment=20,
             rate_limit_segments_per_sec=2, yield_frequency=5, concurrency=1,
-            delete_concurrency=3, allow_async_delete='y')
+            delete_concurrency=3, allow_async_delete='n')
         mware = slo.filter_factory(conf)('have to pass in an app')
         swift_info = registry.get_swift_info()
         self.assertTrue('slo' in swift_info)
         self.assertEqual(swift_info['slo'].get('max_manifest_segments'), 500)
         self.assertEqual(swift_info['slo'].get('min_segment_size'), 1)
         self.assertEqual(swift_info['slo'].get('max_manifest_size'), 1048576)
-        self.assertIs(swift_info['slo'].get('allow_async_delete'), True)
+        self.assertIs(swift_info['slo'].get('allow_async_delete'), False)
         self.assertEqual(500, mware.max_manifest_segments)
         self.assertEqual(1048576, mware.max_manifest_size)
         self.assertEqual(2097152, mware.rate_limit_under_size)
@@ -4629,7 +4629,7 @@ class TestSwiftInfo(unittest.TestCase):
         self.assertEqual(5, mware.yield_frequency)
         self.assertEqual(1, mware.concurrency)
         self.assertEqual(3, mware.bulk_deleter.delete_concurrency)
-        self.assertIs(True, mware.allow_async_delete)
+        self.assertIs(False, mware.allow_async_delete)
 
 
 if __name__ == '__main__':