From b858d01c6195cf10637ec089e2a5b5611a98fa5d Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Wed, 16 Dec 2015 23:42:27 +0000
Subject: [PATCH] Fix DevTools bug.

---
 src/Perspex.Diagnostics/ViewModels/TreeNode.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Perspex.Diagnostics/ViewModels/TreeNode.cs b/src/Perspex.Diagnostics/ViewModels/TreeNode.cs
index 7caf3ac075..2ecb1939b7 100644
--- a/src/Perspex.Diagnostics/ViewModels/TreeNode.cs
+++ b/src/Perspex.Diagnostics/ViewModels/TreeNode.cs
@@ -21,7 +21,7 @@ namespace Perspex.Diagnostics.ViewModels
 
             var classesChanged = Observable.FromEventPattern<
                     NotifyCollectionChangedEventHandler, 
-                    NotifyCollectionChangedEventHandler>(
+                    NotifyCollectionChangedEventArgs>(
                 x => control.Classes.CollectionChanged += x,
                 x => control.Classes.CollectionChanged -= x);