diff --git a/htdocs/expensereport/class/expensereport.class.php b/htdocs/expensereport/class/expensereport.class.php
index 209d7edb12c..9a2cd6728e8 100644
--- a/htdocs/expensereport/class/expensereport.class.php
+++ b/htdocs/expensereport/class/expensereport.class.php
@@ -60,7 +60,7 @@ class ExpenseReport extends CommonObject
 
     // Create
     var $date_create;
-    var $fk_user_author;
+    var $fk_user_author;    // the user the expense report is for (not really the author)
 
     // Update
 	var $date_modif;
diff --git a/htdocs/install/mysql/tables/llx_expensereport.sql b/htdocs/install/mysql/tables/llx_expensereport.sql
index a6b45daddf4..ac1ec890788 100755
--- a/htdocs/install/mysql/tables/llx_expensereport.sql
+++ b/htdocs/install/mysql/tables/llx_expensereport.sql
@@ -35,7 +35,7 @@ CREATE TABLE llx_expensereport (
   date_refuse 		datetime,
   date_cancel 		datetime,
   tms 		 		timestamp,
-  fk_user_author 	integer NOT NULL,
+  fk_user_author 	integer NOT NULL,				-- not the user author but the user the expense report is for
   fk_user_modif 	integer DEFAULT NULL,
   fk_user_valid 	integer DEFAULT NULL,
   fk_user_validator integer DEFAULT NULL,