diff --git a/gunicorn.conf.py b/gunicorn.conf.py
index a3751bfd5..ab83c145e 100644
--- a/gunicorn.conf.py
+++ b/gunicorn.conf.py
@@ -13,7 +13,7 @@
 logger_class = "safe_transaction_service.utils.loggers.CustomGunicornLogger"
 preload_app = False  # Load application code before the worker processes are forked (problems with gevent patching)
 # For timeout to work with gevent, a custom GeventWorker needs to be used
-timeout = os.environ("WEB_WORKER_TIMEOUT", 60)
+timeout = os.environ.get("WEB_WORKER_TIMEOUT", 60)
 
 worker_class = "gunicorn_custom_workers.MyGeventWorker"  # "gevent"
 worker_connections = os.environ.get("WEB_WORKER_CONNECTIONS", 1000)