diff --git a/octodns/provider/ns1.py b/octodns/provider/ns1.py
index d4b6823..5a989c6 100644
--- a/octodns/provider/ns1.py
+++ b/octodns/provider/ns1.py
@@ -312,68 +312,64 @@ class Ns1Provider(BaseProvider):
     ZONE_NOT_FOUND_MESSAGE = 'server error: zone not found'
     SHARED_NOTIFYLIST_NAME = 'octoDNS NS1 Notify List'
 
-    def _update_filter(self, filter):
-        filter.setdefault('disabled', False)
-        return (dict(sorted(filter.items(), key=lambda t: t[0])))
-
     @property
     def _UP_FILTER(self):
-        return self._update_filter({
+        return {
             'config': {},
             'filter': 'up'
-        })
+        }
 
     @property
     def _REGION_FILTER(self):
-        return self._update_filter({
+        return {
             'config': {
                 'remove_no_georegion': True
             },
             'filter': u'geofence_regional'
-        })
+        }
 
     @property
     def _COUNTRY_FILTER(self):
-        return self._update_filter({
+        return {
             'config': {
                 'remove_no_location': True
             },
             'filter': u'geofence_country'
-        })
+        }
 
     # In the NS1 UI/portal, this filter is called "SELECT FIRST GROUP" though
     # the filter name in the NS1 api is 'select_first_region'
     @property
     def _SELECT_FIRST_REGION_FILTER(self):
-        return self._update_filter({
+        return {
             'config': {},
             'filter': u'select_first_region'
-        })
+        }
 
     @property
     def _PRIORITY_FILTER(self):
-        return self._update_filter({
+        return {
             'config': {
                 'eliminate': u'1'
             },
             'filter': 'priority'
-        })
+        }
 
     @property
     def _WEIGHTED_SHUFFLE_FILTER(self):
-        return self._update_filter({
+        return {
             'config': {},
             'filter': u'weighted_shuffle'
-        })
+        }
 
     @property
     def _SELECT_FIRST_N_FILTER(self):
-        return self._update_filter({
+        return {
             'config': {
                 'N': u'1'
             },
             'filter': u'select_first_n'
-        })
+        }
 
     @property
     def _BASIC_FILTER_CHAIN(self):
@@ -465,8 +461,15 @@ class Ns1Provider(BaseProvider):
         self._client = Ns1Client(api_key, parallelism, retry_count,
                                  client_config)
 
+    def _sanitize_disabled_in_filter_config(self, filter_cfg):
+        # remove disabled=False from filters
+        for filter in filter_cfg:
+            if 'disabled' in filter and filter['disabled'] is False:
+                del filter['disabled']
+        return filter_cfg
+
     def _valid_filter_config(self, filter_cfg):
-        self._disabled_flag_in_filters(filter_cfg)
+        self._sanitize_disabled_in_filter_config(filter_cfg)
         has_region = self._REGION_FILTER in filter_cfg
         has_country = self._COUNTRY_FILTER in filter_cfg
         expected_filter_cfg = self._get_updated_filter_chain(has_region,
@@ -1424,10 +1427,6 @@ class Ns1Provider(BaseProvider):
                   for v in record.values]
         return {'answers': values, 'ttl': record.ttl}, None
 
-    def _disabled_flag_in_filters(self, filters):
-        # fill up filters with disabled=False flag whenever absent
-        return [self._update_filter(f) for f in filters]
-
     def _extra_changes(self, desired, changes, **kwargs):
         self.log.debug('_extra_changes: desired=%s', desired.name)
         changed = set([c.record for c in changes])
diff --git a/tests/test_octodns_provider_ns1.py b/tests/test_octodns_provider_ns1.py
index 08f92ac..0dc2258 100644
--- a/tests/test_octodns_provider_ns1.py
+++ b/tests/test_octodns_provider_ns1.py
@@ -2165,7 +2165,7 @@ class TestNs1ProviderDynamic(TestCase):
         extra = provider._extra_changes(desired, [])
         self.assertTrue(extra)
 
-        # Mixed disabled in filters doesn't trigger an update
+        # disabled=False in filters doesn't trigger an update
         reset()
         ns1_zone = {
             'records': [{
@@ -2176,7 +2176,7 @@ class TestNs1ProviderDynamic(TestCase):
                 "filters": provider._BASIC_FILTER_CHAIN
             }],
         }
-        del ns1_zone['records'][0]['filters'][0]['disabled']
+        ns1_zone['records'][0]['filters'][0]['disabled'] = False
         monitors_for_mock.side_effect = [{}]
         zones_retrieve_mock.side_effect = [ns1_zone]
         records_retrieve_mock.side_effect = ns1_zone['records']
@@ -2187,6 +2187,11 @@ class TestNs1ProviderDynamic(TestCase):
         extra = provider._extra_changes(desired, [])
         self.assertFalse(extra)
 
+        # disabled=True in filters does trigger an update
+        ns1_zone['records'][0]['filters'][0]['disabled'] = True
+        extra = provider._extra_changes(desired, [])
+        self.assertTrue(extra)
+
     DESIRED = Zone('unit.tests.', [])
 
     SIMPLE = Record.new(DESIRED, 'sim', {