diff --git a/templates/test/cpp/naming/resolver_component_tests_defs.include b/templates/test/cpp/naming/resolver_component_tests_defs.include
index 7251f4f392e..91094228343 100644
--- a/templates/test/cpp/naming/resolver_component_tests_defs.include
+++ b/templates/test/cpp/naming/resolver_component_tests_defs.include
@@ -79,7 +79,7 @@ def wait_until_dns_server_is_up(args,
           stdout=subprocess.PIPE)
       dns_resolver_stdout, _ = dns_resolver_subprocess.communicate(str.encode('ascii'))
       if dns_resolver_subprocess.returncode == 0:
-        if bytes('123.123.123.123'.encode('ascii')) in dns_resolver_stdout:
+        if '123.123.123.123'.encode('ascii') in dns_resolver_stdout:
           test_runner_log(('DNS server is up! '
                            'Successfully reached it over UDP and TCP.'))
         return
diff --git a/test/cpp/naming/resolver_component_tests_runner.py b/test/cpp/naming/resolver_component_tests_runner.py
index db39615fddd..058968e6b93 100755
--- a/test/cpp/naming/resolver_component_tests_runner.py
+++ b/test/cpp/naming/resolver_component_tests_runner.py
@@ -79,7 +79,7 @@ def wait_until_dns_server_is_up(args,
           stdout=subprocess.PIPE)
       dns_resolver_stdout, _ = dns_resolver_subprocess.communicate(str.encode('ascii'))
       if dns_resolver_subprocess.returncode == 0:
-        if bytes('123.123.123.123'.encode('ascii')) in dns_resolver_stdout:
+        if '123.123.123.123'.encode('ascii') in dns_resolver_stdout:
           test_runner_log(('DNS server is up! '
                            'Successfully reached it over UDP and TCP.'))
         return
diff --git a/test/cpp/naming/utils/dns_server.py b/test/cpp/naming/utils/dns_server.py
index 1685079ef93..77f76983d2a 100755
--- a/test/cpp/naming/utils/dns_server.py
+++ b/test/cpp/naming/utils/dns_server.py
@@ -53,7 +53,7 @@ def start_local_dns_server(args):
     all_records = {}
 
     def _push_record(name, r):
-        name = bytes(name.encode('ascii'))
+        name = name.encode('ascii')
         print('pushing record: |%s|' % name)
         if all_records.get(name) is not None:
             all_records[name].append(r)
@@ -61,7 +61,7 @@ def start_local_dns_server(args):
         all_records[name] = [r]
 
     def _maybe_split_up_txt_data(name, txt_data, r_ttl):
-        txt_data = bytes(txt_data.encode('ascii'))
+        txt_data = txt_data.encode('ascii')
         start = 0
         txt_data_list = []
         while len(txt_data[start:]) > 0:
@@ -95,8 +95,7 @@ def start_local_dns_server(args):
                     p = int(p)
                     w = int(w)
                     port = int(port)
-                    target_full_name = bytes(
-                        ('%s.%s' % (target, common_zone_name)).encode('ascii'))
+                    target_full_name = ('%s.%s' % (target, common_zone_name)).encode('ascii')
                     _push_record(
                         record_full_name,
                         dns.Record_SRV(p, w, port, target_full_name, ttl=r_ttl))
@@ -109,9 +108,9 @@ def start_local_dns_server(args):
     # Server health check record
     _push_record(_SERVER_HEALTH_CHECK_RECORD_NAME,
                  dns.Record_A(_SERVER_HEALTH_CHECK_RECORD_DATA, ttl=0))
-    soa_record = dns.Record_SOA(mname=bytes(common_zone_name.encode('ascii')))
+    soa_record = dns.Record_SOA(mname=common_zone_name.encode('ascii'))
     test_domain_com = NoFileAuthority(
-        soa=(bytes(common_zone_name.encode('ascii')), soa_record),
+        soa=(common_zone_name.encode('ascii'), soa_record),
         records=all_records,
     )
     server = twisted.names.server.DNSServerFactory(