diff --git a/modules/module-monitor/dbus-device-reservation.c b/modules/module-monitor/dbus-device-reservation.c
index f9164ec8ac2b9b3701ff455d399d318d3267a09e..c7c50a8820c3364c61afddb68ba89bf97481fc26 100644
--- a/modules/module-monitor/dbus-device-reservation.c
+++ b/modules/module-monitor/dbus-device-reservation.c
@@ -347,7 +347,7 @@ wp_monitor_dbus_device_reservation_complete_release (
     return;
 
   g_dbus_method_invocation_return_value (self->pending_release,
-      g_variant_new ("(b)", g_variant_new_boolean (res)));
+      g_variant_new ("(b)", res));
   g_clear_object (&self->pending_release);
 }