diff --git a/OnTopReplica/Platforms/Other.cs b/OnTopReplica/Platforms/Other.cs
index e874026..f8dda6a 100644
--- a/OnTopReplica/Platforms/Other.cs
+++ b/OnTopReplica/Platforms/Other.cs
@@ -1,12 +1,14 @@
 using System;
 using System.Collections.Generic;
 using System.Text;
+using System.Windows.Forms;
 
 namespace OnTopReplica.Platforms {
     class Other : PlatformSupport {
         
         public override bool CheckCompatibility() {
-            //TODO: Err MSG
+            //TODO: better error message
+            MessageBox.Show(Strings.ErrorNoDwm, Strings.ErrorNoDwmTitle, MessageBoxButtons.OK, MessageBoxIcon.Error);
             return false;
         }