diff --git a/files/build_templates/swss_vars.j2 b/files/build_templates/swss_vars.j2
index 377837aad0ee..a9bd01565c89 100644
--- a/files/build_templates/swss_vars.j2
+++ b/files/build_templates/swss_vars.j2
@@ -2,5 +2,5 @@
     "asic_type": "{{ asic_type }}",
     "asic_id": "{{ DEVICE_METADATA.localhost.asic_id }}",
     "mac": "{{ DEVICE_METADATA.localhost.mac }}",
-    "synchronous_mode": {% if DEVICE_METADATA.localhost.synchronous_mode == "enable" %}"enable"{% else %}"disable"{% endif %}
+    "synchronous_mode": {% if DEVICE_METADATA.localhost.synchronous_mode == "disable" %}"disable"{% else %}"enable"{% endif %}
 }
diff --git a/src/sonic-config-engine/minigraph.py b/src/sonic-config-engine/minigraph.py
index 6b241866044c..444c0ce52fa8 100644
--- a/src/sonic-config-engine/minigraph.py
+++ b/src/sonic-config-engine/minigraph.py
@@ -967,7 +967,8 @@ def parse_xml(filename, platform=None, port_config_file=None, asic_name=None, hw
         'docker_routing_config_mode': docker_routing_config_mode,
         'hostname': hostname,
         'hwsku': hwsku,
-        'type': device_type
+        'type': device_type,
+        'synchronous_mode': 'enable'
         }
     }
     # for this hostname, if sub_role is defined, add sub_role in