diff --git a/htdocs/expensereport/class/expensereport.class.php b/htdocs/expensereport/class/expensereport.class.php
index 9bbf6617369..b9e60ed50d5 100644
--- a/htdocs/expensereport/class/expensereport.class.php
+++ b/htdocs/expensereport/class/expensereport.class.php
@@ -106,6 +106,11 @@ class ExpenseReport extends CommonObject
 	 */
 	const STATUS_VALIDATED = 2;
 
+	/**
+	 * Classified canceled
+	 */
+	const STATUS_CANCELED = 4;
+
 	/**
 	 * Classified approved
 	 */
@@ -1205,10 +1210,10 @@ class ExpenseReport extends CommonObject
 
         $this->date_debut = $this->db->jdate($objp->date_debut);
 
-        if ($this->fk_statut != 2)
+        if ($this->fk_statut != self::STATUS_VALIDATED)
         {
             $sql = 'UPDATE '.MAIN_DB_PREFIX.$this->table_element;
-            $sql.= " SET fk_statut = 2";
+            $sql.= " SET fk_statut = ".self::STATUS_VALIDATED;
             $sql.= ' WHERE rowid = '.$this->id;
 
             dol_syslog(get_class($this)."::set_save_from_refuse sql=".$sql, LOG_DEBUG);
@@ -1243,12 +1248,12 @@ class ExpenseReport extends CommonObject
 
         // date approval
         $this->date_approve = $now;
-        if ($this->fk_statut != 5)
+        if ($this->fk_statut != self::STATUS_APPROVED)
         {
 			$this->db->begin();
 
             $sql = 'UPDATE '.MAIN_DB_PREFIX.$this->table_element;
-            $sql.= " SET ref = '".$this->db->escape($this->ref)."', fk_statut = 5, fk_user_approve = ".$fuser->id.",";
+            $sql.= " SET ref = '".$this->db->escape($this->ref)."', fk_statut = ".self::STATUS_APPROVED.", fk_user_approve = ".$fuser->id.",";
             $sql.= " date_approve='".$this->db->idate($this->date_approve)."'";
             $sql.= ' WHERE rowid = '.$this->id;
             if ($this->db->query($sql))
@@ -1304,10 +1309,10 @@ class ExpenseReport extends CommonObject
 		$error = 0;
 
         // date de refus
-        if ($this->fk_statut != 99)
+		if ($this->fk_statut != self::STATUS_REFUSED)
         {
             $sql = 'UPDATE '.MAIN_DB_PREFIX.$this->table_element;
-            $sql.= " SET ref = '".$this->db->escape($this->ref)."', fk_statut = 99, fk_user_refuse = ".$fuser->id.",";
+            $sql.= " SET ref = '".$this->db->escape($this->ref)."', fk_statut = ".self::STATUS_REFUSED.", fk_user_refuse = ".$fuser->id.",";
             $sql.= " date_refuse='".$this->db->idate($now)."',";
             $sql.= " detail_refuse='".$this->db->escape($details)."',";
             $sql.= " fk_user_approve = NULL";
@@ -1371,7 +1376,7 @@ class ExpenseReport extends CommonObject
 			$this->db->begin();
 
             $sql = 'UPDATE '.MAIN_DB_PREFIX.$this->table_element;
-            $sql.= " SET paid = 0";
+            $sql.= " SET paid = 0, fk_statut = ".self::STATUS_APPROVED;
             $sql.= ' WHERE rowid = '.$this->id;
 
             dol_syslog(get_class($this)."::set_unpaid sql=".$sql, LOG_DEBUG);
@@ -1426,12 +1431,12 @@ class ExpenseReport extends CommonObject
     {
 		$error = 0;
         $this->date_cancel = $this->db->idate(gmmktime());
-        if ($this->fk_statut != 4)
+        if ($this->fk_statut != self::STATUS_CANCELED)
         {
 			$this->db->begin();
 
             $sql = 'UPDATE '.MAIN_DB_PREFIX.$this->table_element;
-            $sql.= " SET fk_statut = 4, fk_user_cancel = ".$fuser->id;
+            $sql.= " SET fk_statut = ".self::STATUS_CANCELED.", fk_user_cancel = ".$fuser->id;
             $sql.= ", date_cancel='".$this->db->idate($this->date_cancel)."'";
             $sql.= " ,detail_cancel='".$this->db->escape($detail)."'";
             $sql.= ' WHERE rowid = '.$this->id;