diff --git a/History.rdoc b/History.rdoc
index ec3366c..7fa481f 100644
--- a/History.rdoc
+++ b/History.rdoc
@@ -8,6 +8,7 @@
 
 === Bug Fixes
   * Fix `undefined method error` with DataMapper SQLite adaptor. (@lanej)
+  * Fully define Mysql2 adaptor constant. (@jgonera)
 
 == 1.3.0 2014-05-23