diff --git a/ecrire/inc_logos.php3 b/ecrire/inc_logos.php3
index ed97063fc019b70921bba814d272f25fa811427f..8c26b5ed0a1ba14591785efd03d703b794a5315d 100644
--- a/ecrire/inc_logos.php3
+++ b/ecrire/inc_logos.php3
@@ -205,7 +205,7 @@ function creer_vignette($image, $maxWidth, $maxHeight, $format, $destination, $p
 	$formats_sortie = array('jpg','png','gif');
 
 	// si le doc n'est pas une image, refuser
-	if (!eregi(",$format,", ",$formats_graphiques,"))
+	if (!$force AND !eregi(",$format,", ",$formats_graphiques,"))
 		return;
 
 	// chercher un cache