diff --git a/pkg/core/boot.py b/pkg/core/boot.py
index 426be200..3ecfa8ae 100644
--- a/pkg/core/boot.py
+++ b/pkg/core/boot.py
@@ -88,10 +88,10 @@ async def make_app() -> app.Application:
         },
         runtime_info={
             "admin_id": "{}".format(system_cfg.data["admin-sessions"]),
-            "msg_source": [
+            "msg_source": str([
                 adapter_cfg['adapter'] if 'adapter' in adapter_cfg else 'unknown'
                 for adapter_cfg in platform_cfg.data['platform-adapters'] if adapter_cfg['enable']
-            ],
+            ]),
         },
     )
     ap.ctr_mgr = center_v2_api