diff --git a/NOTES b/NOTES
index 7673d54..7751456 100644
--- a/NOTES
+++ b/NOTES
@@ -17,6 +17,7 @@ A few notes on gdb improvements that would help the GUI:
   * No "new thread" event.
     http://sourceware.org/bugzilla/show_bug.cgi?id=15622
   * No "frame selection" event, e.g. when user types "up".
+    https://sourceware.org/bugzilla/show_bug.cgi?id=13598
 
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