diff --git a/server/core/Image.php b/server/core/Image.php
index cfd190d..d345034 100644
--- a/server/core/Image.php
+++ b/server/core/Image.php
@@ -31,34 +31,34 @@ class Image {
 	public function create_image(array $opt){
 		// VOIR SI MAUVAIS TYPE
 		$options = Array();
-		if(array_key_exists('name', $opt)){ // string, rendre le nom obligatoire
+		if(isset($opt['name'])){ // string, rendre le nom obligatoire
 			$options['name'] = $opt['name'];
 		}
-		if(array_key_exists('id', $opt)){ // UUID : nnnnnnnn-nnnn-nnnn-nnnn-nnnnnnnnnnnn
+		if(isset($opt['id'])){ // UUID : nnnnnnnn-nnnn-nnnn-nnnn-nnnnnnnnnnnn
 			$options['id'] = $opt['id'];
 		}
-		if(array_key_exists('visibility', $opt)){ // public, private
+		if(isset($opt['visibility'])){ // public, private
 			$options['visibility'] = $opt['visibility'];
 		}
-		if(array_key_exists('tags', $opt)){ // list
+		if(isset($opt['tags'])){ // list
 			$options['tags'] = $opt['tags'];
 		}
-		if(array_key_exists('containerFormat', $opt)){ // string : ami, ari, aki, bare, ovf, ova, docker
+		if(isset($opt['containerFormat'])){ // string : ami, ari, aki, bare, ovf, ova, docker
 			$options['containerFormat'] = $opt['containerFormat'];
 		}
-		if(array_key_exists('diskFormat', $opt)){ // string : ami, ari, aki, vhd, vmdk, raw, qcow2, vdi, iso
+		if(isset($opt['diskFormat'])){ // string : ami, ari, aki, vhd, vmdk, raw, qcow2, vdi, iso
 			$options['diskFormat'] = $opt['diskFormat'];
 		}
-		if(array_key_exists('minDisk', $opt)){ //int
+		if(isset($opt['minDisk'])){ //int
 			$options['minDisk'] = $opt['minDisk'];
 		}
-		if(array_key_exists('minRam', $opt)){ // int
+		if(isset($opt['minRam'])){ // int
 			$options['minRam'] = $opt['minRam'];
 		}
-		if(array_key_exists('protected', $opt)){ // boolean
+		if(isset($opt['protected'])){ // boolean
 			$options['protected'] = $opt['protected'];
 		}
-		if(array_key_exists('properties', $opt)){ // type dict ?
+		if(isset($opt['properties'])){ // type dict ?
 			$options['properties'] = $opt['properties'];
 		}	
 
@@ -104,21 +104,24 @@ class Image {
 		$options = Array();
 
 		// Voir vérification des types
-		if(array_key_exists('name', $opt)){ //string
+		if(isset($opt['name'])){ //string
 			$options['name'] = $opt['name'];
 		}
-		if(array_key_exists('minDisk', $opt)){ //int
+		if(isset($opt['minDisk'])){ //int
 			$options['minDisk'] = $opt['minDisk'];
 		}
-		if(array_key_exists('minRam', $opt)){ // int
+		if(isset($opt['minRam'])){ // int
 			$options['minRam'] = $opt['minRam'];
 		}
-		if(array_key_exists('protected', $opt)){ // boolean
+		if(isset($opt['protected'])){ // boolean
 			$options['protected'] = $opt['protected'];
 		}
-		if(array_key_exists('visibility', $opt)){ // public, private
+		if(isset($opt['visibility'])){ // public, private
 			$options['visibility'] = $opt['visibility'];
 		}
+		if(isset($opt['tags'])){ // list
+			$options['tags'] = $opt['tags'];
+		}
 		$image->update($options);
 
 		return $image;
diff --git a/server/test.php b/server/test.php
index d7ee6f6..196be0d 100644
--- a/server/test.php
+++ b/server/test.php
@@ -65,9 +65,11 @@ foreach($images as $i){
 }
 echo "</br>";
 
-foreach ($list as $l) {
-    echo $l;
-    echo "</br>";
+if(isset($list)){
+	foreach ($list as $l) {
+	    echo $l;
+	    echo "</br>";
+	}
 }
 
 // Détails Image
@@ -86,8 +88,10 @@ foreach ($list as $l) {
 /*
 $opt_update = Array();
 $opt_update['name'] = "Test";
+$opt_update['tags'] = null;
 
 $update = $image->update_image($id_image, $opt_update);
 echo $update->name;
 */
+
 ?>
\ No newline at end of file