diff --git a/oslo_messaging/tests/rpc/test_server.py b/oslo_messaging/tests/rpc/test_server.py
index 81eb635a8..82cdeb8ee 100644
--- a/oslo_messaging/tests/rpc/test_server.py
+++ b/oslo_messaging/tests/rpc/test_server.py
@@ -353,7 +353,7 @@ class TestRPCServer(test_utils.BaseTestCase, ServerSetupMixin):
             self.assertIsInstance(ex, ValueError)
             self.assertEqual('dsfoo', str(ex))
             self.assertTrue(len(debugs) == 0)
-            self.assertTrue(len(errors) > 0)
+            self.assertGreater(len(errors), 0)
         else:
             self.assertTrue(False)
 
@@ -391,7 +391,7 @@ class TestRPCServer(test_utils.BaseTestCase, ServerSetupMixin):
         except Exception as ex:
             self.assertIsInstance(ex, ValueError)
             self.assertEqual('dsfoo', str(ex))
-            self.assertTrue(len(debugs) > 0)
+            self.assertGreater(len(debugs), 0)
             self.assertTrue(len(errors) == 0)
         else:
             self.assertTrue(False)