diff --git a/change_log.txt b/change_log.txt
index 66c77175..15cc4a04 100644
--- a/change_log.txt
+++ b/change_log.txt
@@ -1,4 +1,7 @@
  ===== 3.1.24.dev ===== (xx.xx.2015)
+  - bugfix {$smarty.constant.TEST} did fail  on undefined constant https://github.com/smarty-php/smarty/issues/28
+  - bugfix access to undefined config variable like {#undef#} did fail https://github.com/smarty-php/smarty/issues/29
+
  ===== 3.1.23 ===== (12.05.2015)
  12.05.2015
   - bugfix of smaller performance issue introduce in 3.1.22 when caching is enabled