diff --git a/HISTORY b/HISTORY
index 00a60b3..b7b2488 100755
--- a/HISTORY
+++ b/HISTORY
@@ -1,3 +1,7 @@
+Nov. 26 2015
+Raised error for invalid routine usage
+Fixed a memory corruption bug when met an invalid routine usage
+
 Nov. 4 2015
 Added an mb_raise_error function