1 files changed, 1 insertions, 1 deletions

diff --git a/lisp/tooltip.el b/lisp/tooltip.el
index 6ed93a0e99e..e6a85439166 100644
--- a/lisp/tooltip.el
+++ b/lisp/tooltip.el
@@ -130,7 +130,7 @@ position to pop up the tooltip."
 
 (defcustom tooltip-gud-display
   '((eq (tooltip-event-buffer tooltip-gud-event)
-        (marker-buffer overlay-arrow-position)))
+        (marker-buffer gud-overlay-arrow-position)))
   "List of forms determining where GUD tooltips are displayed.
 
 Forms in the list are combined with AND.  The default is to display