diff --git a/gtk/TreeIter.custom b/gtk/TreeIter.custom
new file mode 100644
index 000000000..16feece94
--- /dev/null
+++ b/gtk/TreeIter.custom
@@ -0,0 +1,21 @@
+//
+// To avoid ValueType.Equals which is slow
+//
+                public override int GetHashCode ()
+                {
+	                return stamp;
+                }
+
+                public override bool Equals (object o)
+                {
+                        if (o == null)
+                                return false;
+
+                        if (!(o is TreeIter))
+                                return false;
+                        TreeIter ti = (TreeIter) o;
+                        return ti.stamp == stamp &&
+                                ti._user_data == _user_data &&
+                                ti._user_data2 == _user_data2 &&
+                                ti._user_data3 == _user_data3;
+                }