diff --git a/tempest/api/compute/admin/test_availability_zone.py b/tempest/api/compute/admin/test_availability_zone.py
index ee003b0..3470602 100644
--- a/tempest/api/compute/admin/test_availability_zone.py
+++ b/tempest/api/compute/admin/test_availability_zone.py
@@ -29,7 +29,7 @@
     def test_get_availability_zone_list(self):
         # List of availability zone
         availability_zone = self.client.list_availability_zones()
-        self.assertTrue(len(availability_zone['availabilityZoneInfo']) > 0)
+        self.assertGreater(len(availability_zone['availabilityZoneInfo']), 0)
 
     @test.idempotent_id('ef726c58-530f-44c2-968c-c7bed22d5b8c')
     def test_get_availability_zone_list_detail(self):
diff --git a/tempest/scenario/test_aggregates_basic_ops.py b/tempest/scenario/test_aggregates_basic_ops.py
index 43adfb1..8de3561 100644
--- a/tempest/scenario/test_aggregates_basic_ops.py
+++ b/tempest/scenario/test_aggregates_basic_ops.py
@@ -52,7 +52,7 @@
 
     def _get_host_name(self):
         hosts = self.hosts_client.list_hosts()['hosts']
-        self.assertTrue(len(hosts) >= 1)
+        self.assertGreaterEqual(len(hosts), 1)
         computes = [x for x in hosts if x['service'] == 'compute']
         return computes[0]['host_name']
 
diff --git a/tempest/scenario/test_network_v6.py b/tempest/scenario/test_network_v6.py
index dd86d90..496f07e 100644
--- a/tempest/scenario/test_network_v6.py
+++ b/tempest/scenario/test_network_v6.py
@@ -18,7 +18,6 @@
 
 from tempest import config
 from tempest.lib.common.utils import test_utils
-from tempest.lib import decorators
 from tempest.scenario import manager
 from tempest import test
 
@@ -255,7 +254,6 @@
         self._prepare_and_test(address6_mode='dhcpv6-stateless', n_subnets6=2,
                                dualnet=True)
 
-    @decorators.skip_because(bug="1540983")
     @test.idempotent_id('9178ad42-10e4-47e9-8987-e02b170cc5cd')
     @test.services('compute', 'network')
     def test_dualnet_multi_prefix_slaac(self):