diff --git a/qlib/config.py b/qlib/config.py
index 4e5d62564f..6a43bbb89a 100644
--- a/qlib/config.py
+++ b/qlib/config.py
@@ -111,7 +111,7 @@ def set_conf_from_C(self, config_c):
     def register_from_C(config, skip_register=True):
         from .utils import set_log_with_config  # pylint: disable=C0415
 
-        if C.registered and skip_register:
+        if getattr(C, "registered", False) and skip_register:
             return
 
         C.set_conf_from_C(config)