diff --git a/BizHawk.Client.EmuHawk/CustomControls/VirtualListView.cs b/BizHawk.Client.EmuHawk/CustomControls/VirtualListView.cs
index 9edf7ad251..1d5afdc01e 100644
--- a/BizHawk.Client.EmuHawk/CustomControls/VirtualListView.cs
+++ b/BizHawk.Client.EmuHawk/CustomControls/VirtualListView.cs
@@ -19,8 +19,8 @@ namespace BizHawk.Client.EmuHawk
 	[StructLayout(LayoutKind.Sequential)]
 	internal struct NmHdr 
 	{
-		public int HwndFrom;
-		public int IdFrom;
+		public IntPtr HwndFrom;
+		public IntPtr IdFrom;
 		public int Code;
 	}