diff --git a/src/python-systemd/login.c b/src/python-systemd/login.c
index b5cb811ec1e..1e86193f6be 100644
--- a/src/python-systemd/login.c
+++ b/src/python-systemd/login.c
@@ -271,7 +271,9 @@ static PyObject* Monitor_flush(Monitor *self, PyObject *args)
         assert(self);
         assert(!args);
 
+        Py_BEGIN_ALLOW_THREADS
         sd_login_monitor_flush(self->monitor);
+        Py_END_ALLOW_THREADS
         Py_RETURN_NONE;
 }