diff --git a/laborious/utils/connectors_config.py b/laborious/utils/connectors_config.py
index a9f8142..49cce2b 100644
--- a/laborious/utils/connectors_config.py
+++ b/laborious/utils/connectors_config.py
@@ -34,7 +34,7 @@ def build_opc_config():
         return json.loads(opc_raw)
 
     return {
-        'opc': {
+        getenv('OPC_ID', '1'): {
             'id': getenv('OPC_ID', '1'),
             'url': getenv('OPC_URL', 'opc.tcp://localhost:4840'),
             'server_uri': getenv('OPC_SERVER_URI', 'opc.tcp://localhost:4840'),