diff --git a/libmm-glib/mm-manager.c b/libmm-glib/mm-manager.c
index e33ec038..6fa2f0e0 100644
--- a/libmm-glib/mm-manager.c
+++ b/libmm-glib/mm-manager.c
@@ -313,7 +313,7 @@ set_logging_ready (MmGdbusOrgFreedesktopModemManager1 *manager_iface_proxy,
 {
     GError *error = NULL;
 
-    if (mm_gdbus_org_freedesktop_modem_manager1_call_set_logging_finish (
+    if (!mm_gdbus_org_freedesktop_modem_manager1_call_set_logging_finish (
             manager_iface_proxy,
             res,
             &error))