1 files changed, 12 insertions, 0 deletions

diff --git a/src/api/burn/WixToolset.Mba.Core/NativeMethods.cs b/src/api/burn/WixToolset.Mba.Core/NativeMethods.cs
index adb2256e..45a0bc4d 100644
--- a/src/api/burn/WixToolset.Mba.Core/NativeMethods.cs
+++ b/src/api/burn/WixToolset.Mba.Core/NativeMethods.cs
@@ -34,4 +34,16 @@ namespace WixToolset.Mba.Core
             );
         #endregion
     }
+
+    #region SafeHandles
+    internal abstract class SafeHandleZeroIsDefaultAndInvalid : SafeHandle
+    {
+        public SafeHandleZeroIsDefaultAndInvalid() : base(IntPtr.Zero, true) { }
+
+        public override bool IsInvalid
+        {
+            get { return this.handle == IntPtr.Zero; }
+        }
+    }
+    #endregion
 }