diff --git a/config/main.py b/config/main.py
index 778fd429f410..820d4085e690 100755
--- a/config/main.py
+++ b/config/main.py
@@ -413,6 +413,8 @@ def _get_optional_services():
     config_db = ConfigDBConnector()
     config_db.connect()
     optional_services_dict = config_db.get_table('FEATURE')
+    if not optional_services_dict:
+        return None
     return optional_services_dict.keys()
 
 def _stop_services():