diff --git a/htdocs/core/modules/modExpenseReport.class.php b/htdocs/core/modules/modExpenseReport.class.php
index ac93d45d133..d91e9aa6351 100644
--- a/htdocs/core/modules/modExpenseReport.class.php
+++ b/htdocs/core/modules/modExpenseReport.class.php
@@ -205,7 +205,7 @@ class modExpenseReport extends DolibarrModules
 
 		$this->export_sql_start[$r]='SELECT DISTINCT ';
 		$this->export_sql_end[$r]  =' FROM '.MAIN_DB_PREFIX.'expensereport as d';
-		$this->export_sql_end[$r] .=' LEFT JOIN '.MAIN_DB_PREFIX.'expensereport_extrafields as extra on d.rowid = extra.fk_object';
+		$this->export_sql_end[$r] .=' LEFT JOIN '.MAIN_DB_PREFIX.'expensereport_extrafields as extra on d.rowid = extra.fk_object,';
 		$this->export_sql_end[$r] .=' '.MAIN_DB_PREFIX.'user as u,';
 		$this->export_sql_end[$r] .=' '.MAIN_DB_PREFIX.'expensereport_det as ed LEFT JOIN '.MAIN_DB_PREFIX.'c_type_fees as tf ON ed.fk_c_type_fees = tf.id';
 		$this->export_sql_end[$r] .=' LEFT JOIN '.MAIN_DB_PREFIX.'projet as p ON ed.fk_projet = p.rowid';