diff --git a/htdocs/langs/en_US/users.lang b/htdocs/langs/en_US/users.lang
index aea757e4a15..37ad1c0fc0d 100644
--- a/htdocs/langs/en_US/users.lang
+++ b/htdocs/langs/en_US/users.lang
@@ -117,3 +117,4 @@ ForceUserHolidayValidator=Force leave request validator
 ValidatorIsSupervisorByDefault=By default, the validator is the supervisor of the user. Keep empty to keep this behaviour.
 UserPersonalEmail=Personal email
 UserPersonalMobile=Personal mobile phone
+WarningNotLangOfInterface=Warning, this is the main language the user speak, not the language of the interface he choosed to see. To change the interface language visible by this user, go on tab %s 
\ No newline at end of file
diff --git a/htdocs/user/card.php b/htdocs/user/card.php
index d74467a14b7..eb3cd67cf50 100644
--- a/htdocs/user/card.php
+++ b/htdocs/user/card.php
@@ -44,6 +44,7 @@ require_once DOL_DOCUMENT_ROOT.'/core/lib/company.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/images.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/usergroups.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/extrafields.class.php';
+require_once DOL_DOCUMENT_ROOT.'/core/class/html.formadmin.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/html.formcompany.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/html.formother.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/security2.lib.php';
@@ -253,6 +254,8 @@ if (empty($reshook)) {
 
 			$object->fk_warehouse = GETPOST('fk_warehouse', 'int');
 
+			$object->lang = GETPOST('default_lang', 'aZ09');
+
 			// Fill array 'array_options' with data from add form
 			$ret = $extrafields->setOptionalsFromPost(null, $object);
 			if ($ret < 0) {
@@ -415,6 +418,8 @@ if (empty($reshook)) {
 				    $object->fk_warehouse = GETPOST('fk_warehouse', 'int');
                 }
 
+                $object->lang = GETPOST('default_lang', 'aZ09');
+
 				if (!empty($conf->multicompany->enabled))
 				{
 					if (!empty($_POST["superadmin"]))
@@ -671,6 +676,7 @@ if (empty($reshook)) {
 $form = new Form($db);
 $formother = new FormOther($db);
 $formcompany = new FormCompany($db);
+$formadmin = new FormAdmin($db);
 $formfile = new FormFile($db);
 if (!empty($conf->stock->enabled)) $formproduct = new FormProduct($db);
 
@@ -1113,6 +1119,14 @@ if ($action == 'create' || $action == 'adduserldap')
 		print "</td></tr>";
 	}
 
+	if (!empty($conf->global->MAIN_MULTILANGS))
+	{
+		print '<tr><td>'.$form->editfieldkey('DefaultLang', 'default_lang', '', $object, 0).'</td><td colspan="3" class="maxwidthonsmartphone">'."\n";
+		print $formadmin->select_language(GETPOST('default_lang', 'alpha') ?GETPOST('default_lang', 'alpha') : ($object->lang ? $object->lang : ''), 'default_lang', 0, 0, 1, 0, 0, 'maxwidth200onsmartphone');
+		print '</td>';
+		print '</tr>';
+	}
+
 	// Multicompany
 	if (!empty($conf->multicompany->enabled) && is_object($mc))
 	{
@@ -1654,6 +1668,19 @@ if ($action == 'create' || $action == 'adduserldap')
 				print '</td></tr>';
 			}
 
+			// Default language
+			if (!empty($conf->global->MAIN_MULTILANGS))
+			{
+				require_once DOL_DOCUMENT_ROOT.'/core/lib/functions2.lib.php';
+				print '<tr><td>'.$langs->trans("DefaultLang").'</td><td>';
+				//$s=picto_from_langcode($object->default_lang);
+				//print ($s?$s.' ':'');
+				$langs->load("languages");
+				$labellang = ($object->lang ? $langs->trans('Language_'.$object->lang) : '');
+				print $form->textwithpicto($labellang, $langs->trans("WarningNotLangOfInterface", $langs->transnoentitiesnoconv("UserGUISetup")));
+				print '</td></tr>';
+			}
+
 			if (isset($conf->file->main_authentication) && preg_match('/openid/', $conf->file->main_authentication) && !empty($conf->global->MAIN_OPENIDURL_PERUSER))
 			{
 				print '<tr><td>'.$langs->trans("OpenIDURL").'</td>';
@@ -2446,6 +2473,15 @@ if ($action == 'create' || $action == 'adduserldap')
 				print "</td></tr>";
 			}
 
+			// Default language
+			if (!empty($conf->global->MAIN_MULTILANGS))
+			{
+				print '<tr><td>'.$form->editfieldkey('DefaultLang', 'default_lang', '', $object, 0).'</td><td colspan="3">'."\n";
+				print $formadmin->select_language($object->lang, 'default_lang', 0, 0, 1);
+				print '</td>';
+				print '</tr>';
+			}
+
 			// Status
 			print '<tr><td>'.$langs->trans("Status").'</td>';
 			print '<td>';
diff --git a/htdocs/user/class/user.class.php b/htdocs/user/class/user.class.php
index cc794db045b..75c6a0a4d60 100644
--- a/htdocs/user/class/user.class.php
+++ b/htdocs/user/class/user.class.php
@@ -1549,6 +1549,7 @@ class User extends CommonObject
 		$sql .= ", default_range = ".($this->default_range > 0 ? $this->default_range : 'null');
 		$sql .= ", default_c_exp_tax_cat = ".($this->default_c_exp_tax_cat > 0 ? $this->default_c_exp_tax_cat : 'null');
 		$sql .= ", fk_warehouse = ".($this->fk_warehouse ? "'".$this->db->escape($this->fk_warehouse)."'" : "null");
+		$sql .= ", lang = ".($this->lang ? "'".$this->db->escape($this->lang)."'" : "null");
 
 		$sql .= " WHERE rowid = ".$this->id;