diff --git a/src/sonic-py-common/sonic_py_common/device_info.py b/src/sonic-py-common/sonic_py_common/device_info.py
index e52e9ef9eebf..225002b643cc 100644
--- a/src/sonic-py-common/sonic_py_common/device_info.py
+++ b/src/sonic-py-common/sonic_py_common/device_info.py
@@ -268,7 +268,8 @@ def get_path_to_port_config_file(hwsku=None, asic=None):
         if os.path.isfile(os.path.join(platform_path, PLATFORM_JSON_FILE)):
             json_file = os.path.join(platform_path, PLATFORM_JSON_FILE)
             platform_data = json.loads(open(json_file).read())
-            if len(platform_data.get("interfaces")) > 0:
+            interfaces = platform_data.get('interfaces', None)
+            if interfaces and len(interfaces) > 0:
                 port_config_candidates.append(os.path.join(platform_path, PLATFORM_JSON_FILE))
 
     # Check for 'port_config.ini' file presence in a few locations