diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 09020f64ddb..c6fd80f72d0 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -7932,7 +7932,7 @@ function getAdvancedPreviewUrl($modulepart, $relativepath, $alldata = 0, $param
 
 	if ($alldata == 1)
 	{
-		if (isAllowedForPreview) return array('target'=>'_blank', 'css'=>'documentpreview', 'url'=>DOL_URL_ROOT.'/document.php?modulepart='.$modulepart.'&attachment=0&file='.urlencode($relativepath).($param ? '&'.$param : ''), 'mime'=>dol_mimetype($relativepath));
+		if ($isAllowedForPreview) return array('target'=>'_blank', 'css'=>'documentpreview', 'url'=>DOL_URL_ROOT.'/document.php?modulepart='.$modulepart.'&attachment=0&file='.urlencode($relativepath).($param ? '&'.$param : ''), 'mime'=>dol_mimetype($relativepath));
 		else return array();
 	}