diff --git a/src/Avalonia.MicroCom/MicroComProxyBase.cs b/src/Avalonia.MicroCom/MicroComProxyBase.cs
index 140af3e4ef..fe8a2bf9cf 100644
--- a/src/Avalonia.MicroCom/MicroComProxyBase.cs
+++ b/src/Avalonia.MicroCom/MicroComProxyBase.cs
@@ -65,7 +65,7 @@ namespace Avalonia.MicroCom
 
         protected virtual void Dispose(bool disposing)
         {
-            if(_nativePointer == null)
+            if(_nativePointer == IntPtr.Zero)
                 return;
             if (_ownsHandle)
             {