1 files changed, 1 insertions, 0 deletions

diff --git a/src/alloc.c b/src/alloc.c
index 4c229c6329f..2f0cfd70238 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -1802,6 +1802,7 @@ mark_object (argptr)
 
           mark_object (&ptr->name);
           mark_object (&ptr->icon_name);
+          mark_object (&ptr->title);
           mark_object (&ptr->focus_frame);
           mark_object (&ptr->selected_window);
           mark_object (&ptr->minibuffer_window);