diff --git a/docker/qgisserver/logging.ini b/docker/qgisserver/logging.ini
index 22e1ce00f9..cbf3d09431 100644
--- a/docker/qgisserver/logging.ini
+++ b/docker/qgisserver/logging.ini
@@ -47,7 +47,7 @@ formatter = generic
 
 [handler_json]
 class = geomapfish_qgisserver.gmf_logging.JsonLogHandler
-args = ()
+args = (sys.stderr,)
 level = NOTSET
 formatter = generic