diff --git a/gunicorn-logging-extension/src/gunicorn_logging_extension/__init__.py b/gunicorn-logging-extension/src/gunicorn_logging_extension/__init__.py
index 500b671..140619c 100644
--- a/gunicorn-logging-extension/src/gunicorn_logging_extension/__init__.py
+++ b/gunicorn-logging-extension/src/gunicorn_logging_extension/__init__.py
@@ -85,20 +85,20 @@ class Logger(gLogger):
         # - if atom doesn't exist replace it by '-'
         safe_atoms = self.atoms_wrapper_class(self.atoms(resp, req, environ, request_time))
         extra = dict(
-            method=environ.get("REQUEST_METHOD"),
-            path=environ.get("PATH_INFO"),
-            query=environ.get("QUERY_STRING"),
-            proto=environ.get("SERVER_PROTOCOL"),
-            time="%d.%06d" % (request_time.seconds, request_time.microseconds),
+            METHOD=environ.get("REQUEST_METHOD"),
+            PATH=environ.get("PATH_INFO"),
+            QUERY=environ.get("QUERY_STRING"),
+            PROTO=environ.get("SERVER_PROTOCOL"),
+            TIME="%d.%06d" % (request_time.seconds, request_time.microseconds),
         )
         if environ.get("REMOTE_ADDR", False):
-            extra["remote"] = environ.get("REMOTE_ADDR")
+            extra["REMOTE"] = environ.get("REMOTE_ADDR")
         if getattr(resp, "sent", False):
-            extra["length"] = getattr(resp, "sent")
+            extra["LENGTH"] = getattr(resp, "sent")
         if environ.get("HTTP_REFERER", False):
-            extra["referer"] = environ.get("HTTP_REFERER")
+            extra["REFERER"] = environ.get("HTTP_REFERER")
         if environ.get("HTTP_USER_AGENT", False):
-            extra["user_agent"] = environ.get("HTTP_USER_AGENT")
+            extra["USER_AGENT"] = environ.get("HTTP_USER_AGENT")
 
         try:
             self.access_log.info(self.cfg.access_log_format, safe_atoms, extra=extra)