diff --git a/gunicorn.conf.py b/gunicorn.conf.py
index ec40a4b..64a5829 100644
--- a/gunicorn.conf.py
+++ b/gunicorn.conf.py
@@ -8,5 +8,5 @@ threads = int(getenv("GUNICORN_THREADS", 4))
 accesslog = getenv("GUNICORN_ACCESSLOG", "-")
 errorlog = getenv("GUNICORN_ERRORLOG", "-")
 loglevel = getenv("GUNICORN_LOGLEVEL", "info")
-access_log_format = getenv("GUNICORN_ACCESS_LOG_FORMAT", '{"time":"%(t)s","id":"%({X-Request-Id}i)s","ip":"%(h)s","method":"%(m)s","url":"%(U)s","status":"%(s)s","contentType":"%(Content-Type)s","userAgent":"%(a)s","referer":"%(f)s","sent":"%(B)s"},"duration":"%(D)s"')
+access_log_format = getenv("GUNICORN_ACCESS_LOG_FORMAT", '{"time":"%(t)s","id":"%({X-Request-Id}i)s","ip":"%(h)s","method":"%(m)s","url":"%(U)s","status":"%(s)s","contentType":"%(Content-Type)s","userAgent":"%(a)s","referer":"%(f)s","sent":"%(B)s","duration":"%(D)s"}')
 preload_app = bool(strtobool(getenv("GUNICORN_PRELOAD", "True")))