diff --git a/app/logging_config.py b/app/logging_config.py
index 2216994..a472fb9 100644
--- a/app/logging_config.py
+++ b/app/logging_config.py
@@ -2,8 +2,6 @@ import json
 import logging
 from datetime import datetime, timezone
 
-_FIELDS = ("event", "monitor_id", "url", "outcome", "latency_ms", "http_status", "error")
-
 
 class JsonFormatter(logging.Formatter):
     def format(self, record: logging.LogRecord) -> str:
@@ -13,12 +11,10 @@ class JsonFormatter(logging.Formatter):
             "logger": record.name,
             "message": record.getMessage(),
         }
-        for field in _FIELDS:
-            value = getattr(record, field, None)
+        for key in ("monitor_id", "target", "outcome", "latency_ms", "http_status"):
+            value = getattr(record, key, None)
             if value is not None:
-                payload[field] = value
-        if record.exc_info:
-            payload["exception"] = self.formatException(record.exc_info)
+                payload[key] = value
         return json.dumps(payload, separators=(",", ":"), default=str)
 
 
@@ -26,6 +22,5 @@ def configure_logging(level: str) -> None:
     handler = logging.StreamHandler()
     handler.setFormatter(JsonFormatter())
     root = logging.getLogger()
-    root.handlers.clear()
-    root.addHandler(handler)
-    root.setLevel(level)
+    root.handlers = [handler]
+    root.setLevel(level.upper())