diff --git a/src/node/NetworkView.js b/src/node/NetworkView.js
index f2c271f..ca79542 100644
--- a/src/node/NetworkView.js
+++ b/src/node/NetworkView.js
@@ -290,9 +290,7 @@ Ext.define('Proxmox.node.NetworkView', {
 			    callback: function() {
 				reload();
 			    },
-			    failure: function(response, opts) {
-				Ext.Msg.alert(gettext('Error'), response.htmlStatus);
-			    },
+			    failure: response => Ext.Msg.alert(gettext('Error'), response.htmlStatus),
 			});
 		    },
 		},
diff --git a/src/window/TaskViewer.js b/src/window/TaskViewer.js
index fb478c1..e20e3b2 100644
--- a/src/window/TaskViewer.js
+++ b/src/window/TaskViewer.js
@@ -203,9 +203,7 @@ Ext.define('Proxmox.window.TaskViewer', {
 		url: "/nodes/" + task.node + "/tasks/" + encodeURIComponent(me.upid),
 		waitMsgTarget: me,
 		method: 'DELETE',
-		failure: function(response, opts) {
-		    Ext.Msg.alert(gettext('Error'), response.htmlStatus);
-		},
+		failure: response => Ext.Msg.alert(gettext('Error'), response.htmlStatus),
 	    });
 	};