diff --git a/htdocs/core/class/commondocgenerator.class.php b/htdocs/core/class/commondocgenerator.class.php
index 86ac881ec13..98cb306fdd9 100644
--- a/htdocs/core/class/commondocgenerator.class.php
+++ b/htdocs/core/class/commondocgenerator.class.php
@@ -146,7 +146,7 @@ abstract class CommonDocGenerator
 			'myuser_logo'=>$logotouse,
 			'myuser_job'=>$user->job,
 			'myuser_web'=>''	// url not exist in $user object,
-			'myuser_birth'=>dol_print_date($user->birth, 'day', 'tzuser'),
+			'myuser_birth'=>dol_print_date($user->birth, 'day', 'gmt'),
 			'myuser_dateemployment'=>dol_print_date($user->dateemployment, 'day', 'tzuser'),
 			'myuser_dateemploymentend'=>dol_print_date($user->dateemploymentend, 'day', 'tzuser'),
 			'myuser_gender'=>$user->gender,