diff --git a/plugins/python/wsgi_subhandler.c b/plugins/python/wsgi_subhandler.c
index 36f90c63..a68a5a7a 100644
--- a/plugins/python/wsgi_subhandler.c
+++ b/plugins/python/wsgi_subhandler.c
@@ -78,7 +78,10 @@ void *uwsgi_request_subhandler_wsgi(struct wsgi_request *wsgi_req, struct uwsgi_
 
 	wsgi_req->async_app = wi->callable;
 
-	//PyDict_SetItemString(uwsgi.embedded_dict, "env", wsgi_req->async_environ);
+	// export .env only in non-threaded mode
+	if (uwsgi.threads < 2) {
+		PyDict_SetItemString(up.embedded_dict, "env", wsgi_req->async_environ);
+	}
 
 	PyDict_SetItemString(wsgi_req->async_environ, "uwsgi.version", PyString_FromString(UWSGI_VERSION));
 	if (uwsgi.cores > 1) {