1 files changed, 5 insertions, 0 deletions

diff --git a/src/fs/fs_namespace.c b/src/fs/fs_namespace.c
index 34c58f387..cd0bfc415 100644
--- a/src/fs/fs_namespace.c
+++ b/src/fs/fs_namespace.c
@@ -345,6 +345,11 @@ advertisement_cont (void *cls,
       GNUNET_SCHEDULER_add_continuation (&do_disconnect,
                                          ac->dsh,
                                          GNUNET_SCHEDULER_REASON_PREREQ_DONE);
+      if (msg == NULL)
+        {
+          GNUNET_break (0);
+          msg = _("Unknown error");
+        }
       if (ac->cont != NULL)
         ac->cont (ac->cont_cls, NULL, msg);
       GNUNET_FS_uri_destroy (ac->ksk_uri);