diff --git a/main/install/index.php b/main/install/index.php
index 62dbf2c3af..703eaf65e3 100644
--- a/main/install/index.php
+++ b/main/install/index.php
@@ -389,7 +389,7 @@ elseif (!empty($_POST['step5']))
 
 
 <div id="header">
-	<div id="header1"><?php echo get_lang('DokeosInstallation').' &mdash; '.get_lang('Version_').' '.$new_version; ?><?php if($installType == 'new') echo ' &ndash; '.get_lang('NewInstallation'); else if($installType == 'update') echo ' &ndash; '.get_lang('UpdateFromDokeosVersion').implode('|',$update_from_version); ?></div>
+	<div id="header1"><?php echo get_lang('DokeosInstallation').' &mdash; '.get_lang('Version_').' '.$new_version; ?><?php if($installType == 'new') echo ' &ndash; '.get_lang('NewInstallation'); else if($installType == 'update') echo ' &ndash; '.get_lang('UpdateFromDokeosVersion').(is_array($update_from_version)?implode('|',$update_from_version):''); ?></div>
 	<div id="header2">&nbsp;</div>
 	<div id="header3">&nbsp;</div>
 </div>