diff --git a/api/onnx_web/logging.py b/api/onnx_web/logging.py
index cb7aad83..11578932 100644
--- a/api/onnx_web/logging.py
+++ b/api/onnx_web/logging.py
@@ -48,7 +48,7 @@ def add_logging_level(level_name, level_num, method_name=None):
     # http://stackoverflow.com/q/2183233/2988730, especially
     # http://stackoverflow.com/a/13638084/2988730
     def log_for_level(self, message, *args, **kwargs):
-        self.log(level_num, message, args, **kwargs)
+        self._log(level_num, message, args, **kwargs)
 
     def log_to_root(message, *args, **kwargs):
         logging.log(level_num, message, *args, **kwargs)