diff --git a/htdocs/accountancy/class/bookkeeping.class.php b/htdocs/accountancy/class/bookkeeping.class.php
index 2788526de05..e9bbc7d5958 100644
--- a/htdocs/accountancy/class/bookkeeping.class.php
+++ b/htdocs/accountancy/class/bookkeeping.class.php
@@ -27,7 +27,7 @@
 /**
  *	Class to manage accountancy book keeping
  */
-class BookKeeping
+class BookKeeping extends CommonObject
 {
 	var $db;
 	var $id;
@@ -709,4 +709,4 @@ class BookKeepingLine
 	var $fk_user_author;
 	var $code_journal;
 	var $piece_num;
-}
\ No newline at end of file
+}