diff --git a/osu.Desktop/LegacyIpc/LegacyIpcMessage.cs b/osu.Desktop/LegacyIpc/LegacyIpcMessage.cs
index 865d1aa60c..76eb6cdbd1 100644
--- a/osu.Desktop/LegacyIpc/LegacyIpcMessage.cs
+++ b/osu.Desktop/LegacyIpc/LegacyIpcMessage.cs
@@ -47,7 +47,7 @@ namespace osu.Desktop.LegacyIpc
         public class Data
         {
             public string MessageType { get; set; } = string.Empty;
-            public object MessageData { get; set; }
+            public object MessageData { get; set; } = default!;
         }
     }
 }