diff --git a/core/class/helper.class.php b/core/class/helper.class.php
index 286a0d8..45a0372 100644
--- a/core/class/helper.class.php
+++ b/core/class/helper.class.php
@@ -618,7 +618,7 @@ class helper {
 				// Dossier avec au moins 1 image ?
 				while (($file = readdir($dirImg)) !== false) {	
 					if(is_file($dirco .'/'. $file)){
-						if(in_array(preg_replace("#(.+)\.(.+)#", "$2", $file), $filter)){
+						if(in_array(preg_replace("#(.+)\.(.+)#", "$2", strtolower($file)), $filter)){
 							$dirContentFilter[] = $dirco;
 							continue(2);
 						}