diff --git a/gtk/ArrayExtensions.cs b/gtk/ArrayExtensions.cs
new file mode 100644
index 000000000..b58db2a8b
--- /dev/null
+++ b/gtk/ArrayExtensions.cs
@@ -0,0 +1,35 @@
+// Gtk.TreeStore.cs - Gtk TreeStore class customizations
+//
+// Authors: Marek Habersack <grendel@twistedcode.net>
+//
+// Copyright (c) 2016 Marek Habersack
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of version 2 of the Lesser GNU General 
+// Public License as published by the Free Software Foundation.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this program; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA 02111-1307, USA.
+
+namespace Gtk {
+	using System;
+
+	static class ArrayExtensions
+	{
+		public static object[] Explode (this Array arr)
+		{
+			if (arr == null)
+				return null;
+			var ret = new object [arr.Length];
+			arr.CopyTo (ret, 0);
+			return ret;
+		}
+	}
+}
diff --git a/gtk/ListStore.cs b/gtk/ListStore.cs
index 47c4505e6..585df14dc 100644
--- a/gtk/ListStore.cs
+++ b/gtk/ListStore.cs
@@ -110,7 +110,7 @@ namespace Gtk {
 		public Gtk.TreeIter AppendValues (Array values) 
 		{
 			Gtk.TreeIter iter = Append();
-			SetValues (iter, values);
+			SetValues (iter, values.Explode ());
 			return iter;
 		}
 		
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index 3a5d45f78..19ecbd148 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -22,6 +22,7 @@ sources = 				\
 	ActionGroup.cs		\
 	Adjustment.cs			\
 	Application.cs			\
+	ArrayExtensions.cs	\
 	Bin.cs				\
 	BindingAttribute.cs		\
 	Builder.cs			\
diff --git a/gtk/TreeStore.cs b/gtk/TreeStore.cs
index d2f3a4d21..9cfe85b2e 100644
--- a/gtk/TreeStore.cs
+++ b/gtk/TreeStore.cs
@@ -200,7 +200,7 @@ namespace Gtk {
 
 		public Gtk.TreeIter AppendValues (Gtk.TreeIter parent, Array values) {
 			Gtk.TreeIter iter = AppendNode (parent);
-			SetValues (iter, values);
+			SetValues (iter, values.Explode ());
 			return iter;
 		}
 		
@@ -212,12 +212,14 @@ namespace Gtk {
 
 		public Gtk.TreeIter AppendValues (Array values) {
 			Gtk.TreeIter iter = AppendNode ();
-			SetValues (iter, values);
+			SetValues (iter, values.Explode ());
 			return iter;
 		}
 		
 		public Gtk.TreeIter AppendValues (params object[] values) {
-			return AppendValues ((Array) values);
+			Gtk.TreeIter iter = AppendNode ();
+			SetValues (iter, values);
+			return iter;
 		}
 
 		[DllImport (Global.GtkNativeDll, CallingConvention = CallingConvention.Cdecl)]
diff --git a/gtk/gtk.csproj b/gtk/gtk.csproj
index 97b284691..83b45c8bb 100644
--- a/gtk/gtk.csproj
+++ b/gtk/gtk.csproj
@@ -141,6 +141,7 @@
     <Compile Include="Widget.cs" />
     <Compile Include="Window.cs" />
     <Compile Include="RadioAction.cs" />
+    <Compile Include="ArrayExtensions.cs" />
     <Compile Include="generated\Gtk\AboutDialog.cs" />
     <Compile Include="generated\Gtk\Accel.cs" />
     <Compile Include="generated\Gtk\AccelActivateHandler.cs" />