diff --git a/plugins/provider/mm/calls-mm-provider.c b/plugins/provider/mm/calls-mm-provider.c
index 4424958..11462e4 100644
--- a/plugins/provider/mm/calls-mm-provider.c
+++ b/plugins/provider/mm/calls-mm-provider.c
@@ -274,7 +274,7 @@ mm_manager_new_cb (GDBusConnection *connection,
                    GAsyncResult    *res,
                    CallsMMProvider *self)
 {
-  GError *error = NULL;
+  g_autoptr (GError) error = NULL;
 
   self->mm = mm_manager_new_finish (res, &error);
   if (!self->mm) {