diff --git a/changelog.txt b/changelog.txt
index 7b7aedd..0214081 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -2,6 +2,7 @@
 2025-01-18
 ----------
 - fix undeclared global
+- added nil check after reading world data file
 
 
 v1.2.1