diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index bfc120b31d..aa6d8301a1 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -45,6 +45,7 @@
   * source/rtl/alert.prg
     % Minor optimization.
     ; NOTE: Found yet another hidden extension in Alert() code :(
+            UPDATE: It's a CT Alert() override extension.
 
   * source/rtl/radiobtn.prg
     ! Fix and optimization in recent modification.