diff --git a/htdocs/core/lib/website.lib.php b/htdocs/core/lib/website.lib.php
index a02ee3ec9a3..c204f9adde5 100644
--- a/htdocs/core/lib/website.lib.php
+++ b/htdocs/core/lib/website.lib.php
@@ -638,7 +638,7 @@ function includeContainer($containerref, $once = 0, $cachedelay = 0, $cachekey =
 
 	// We don't print info messages for pages of type library or service
 	if (!empty($websitepage->type_container) && !in_array($websitepage->type_container, array('library', 'service'))) {
-		print "\n".'<!-- include '.$websitekey.'/'.$containerref.($cachekey ? ' '.$cachekey : '').(is_object($websitepage) ? ' parent id='.$websitepage->id : '').' level='.$includehtmlcontentopened.' -->'."\n";
+		print "\n".'<!-- include '.$websitekey.'/'.$containerref.($cachekey ? ' cachekey='.$cachekey : '').(is_object($websitepage) ? ' parent id='.$websitepage->id : '').' level='.$includehtmlcontentopened.' -->'."\n";
 	}
 
 	$tmpoutput = '';