diff --git a/htdocs/core/datepicker.php b/htdocs/core/datepicker.php
index 893b3929e2e..03264601624 100644
--- a/htdocs/core/datepicker.php
+++ b/htdocs/core/datepicker.php
@@ -26,13 +26,13 @@
  *       \brief      File to manage popup date selector
  */
 
-if (! defined('NOREQUIREUSER')) define('NOREQUIREUSER','1');	// disabled
-//if (! defined('NOREQUIREDB'))   define('NOREQUIREDB','1');	// Not disabled cause need to load global conf for START_WEEK
+//if (! defined('NOREQUIREUSER'))   define('NOREQUIREUSER','1');	// Not disabled cause need to load personalized language
+//if (! defined('NOREQUIREDB'))     define('NOREQUIREDB','1');	// Not disabled cause need to load personalized language
 if (! defined('NOREQUIRESOC'))    define('NOREQUIRESOC','1');
-//if (! defined('NOREQUIRETRAN')) define('NOREQUIRETRAN','1');	// Not disabled cause need to do translations
+//if (! defined('NOREQUIRETRAN')) define('NOREQUIRETRAN','1');		// Not disabled cause need to do translations
 if (! defined('NOCSRFCHECK'))     define('NOCSRFCHECK',1);
 if (! defined('NOTOKENRENEWAL'))  define('NOTOKENRENEWAL',1);
-if (! defined('NOLOGIN')) define('NOLOGIN',1);					// disabled
+if (! defined('NOLOGIN')) define('NOLOGIN',1);					// Not disabled cause need to load personalized language
 if (! defined('NOREQUIREMENU'))   define('NOREQUIREMENU',1);
 if (! defined('NOREQUIREHTML'))   define('NOREQUIREHTML',1);
 
@@ -188,12 +188,26 @@ function displayBox($selectedDate,$month,$year)
 	<tr class="dpDayNames">
 	<?php
 	$startday=isset($conf->global->MAIN_START_WEEK)?$conf->global->MAIN_START_WEEK:1;
-	$day_names = array('ShortSunday', 'ShortMonday', 'ShortTuesday', 'ShortWednesday', 'ShortThursday', 'ShortFriday', 'ShortSaturday');
-	for( $i=0; $i < 7; $i++ )
-	{
-		echo '<td width="', (int) (($i+1)*100/7) - (int) ($i*100/7), '%">', $langs->trans($day_names[($i + $startday) % 7]), '</td>', "\n";
-	}
-	?>
+	if($startday==1)
+	{?>
+		<td width="14%"><?php echo $langs->trans("ShortMonday") ?></td>
+		<td width="15%"><?php echo $langs->trans("ShortTuesday") ?></td>
+		<td width="14%"><?php echo $langs->trans("ShortWednesday") ?></td>
+		<td width="15%"><?php echo $langs->trans("ShortThursday") ?></td>
+		<td width="14%"><?php echo $langs->trans("ShortFriday") ?></td>
+		<td width="14%"><?php echo $langs->trans("ShortSaturday") ?></td>
+		<td width="14%"><?php echo $langs->trans("ShortSunday") ?></td>
+	<?php
+	}else {?>
+		<td width="14%"><?php echo $langs->trans("ShortSunday") ?></td>
+		<td width="14%"><?php echo $langs->trans("ShortMonday") ?></td>
+		<td width="15%"><?php echo $langs->trans("ShortTuesday") ?></td>
+		<td width="14%"><?php echo $langs->trans("ShortWednesday") ?></td>
+		<td width="15%"><?php echo $langs->trans("ShortThursday") ?></td>
+		<td width="14%"><?php echo $langs->trans("ShortFriday") ?></td>
+		<td width="14%"><?php echo $langs->trans("ShortSaturday") ?></td>
+		<?php
+	}?>
 	</tr>
 	<?php
 	//print "x ".$thedate." y";			// $thedate = first day of month