diff --git a/src/cascadia/Remoting/Monarch.idl b/src/cascadia/Remoting/Monarch.idl
index 08c7b63cbda..2ef09807080 100644
--- a/src/cascadia/Remoting/Monarch.idl
+++ b/src/cascadia/Remoting/Monarch.idl
@@ -68,7 +68,7 @@ namespace Microsoft.Terminal.Remoting
         event Windows.Foundation.TypedEventHandler<Object, QuitAllRequestedArgs> QuitAllRequested;
     };
 
-    [default_interface] runtimeclass Monarch : IMonarch
+    runtimeclass Monarch : [default] IMonarch
     {
         Monarch();
     };
diff --git a/src/cascadia/Remoting/WindowManager.cpp b/src/cascadia/Remoting/WindowManager.cpp
index 3e500da01cb..d67e279fd70 100644
--- a/src/cascadia/Remoting/WindowManager.cpp
+++ b/src/cascadia/Remoting/WindowManager.cpp
@@ -341,8 +341,8 @@ namespace winrt::Microsoft::Terminal::Remoting::implementation
         //
         // * If we're running unpackaged: the .winmd must be a sibling of the .exe
         // * If we're running packaged: the .winmd must be in the package root
-        _monarch = create_instance<Remoting::Monarch>(Monarch_clsid,
-                                                      CLSCTX_LOCAL_SERVER);
+        _monarch = create_instance<Remoting::IMonarch>(Monarch_clsid,
+                                                       CLSCTX_LOCAL_SERVER);
     }
 
     // NOTE: This can throw! Callers include:
diff --git a/src/cascadia/Remoting/WindowManager.h b/src/cascadia/Remoting/WindowManager.h
index b3d480c5259..7ecf36a5df6 100644
--- a/src/cascadia/Remoting/WindowManager.h
+++ b/src/cascadia/Remoting/WindowManager.h
@@ -65,7 +65,7 @@ namespace winrt::Microsoft::Terminal::Remoting::implementation
         bool _shouldCreateWindow{ false };
         bool _isKing{ false };
         DWORD _registrationHostClass{ 0 };
-        winrt::Microsoft::Terminal::Remoting::Monarch _monarch{ nullptr };
+        winrt::Microsoft::Terminal::Remoting::IMonarch _monarch{ nullptr };
         winrt::Microsoft::Terminal::Remoting::Peasant _peasant{ nullptr };
 
         wil::unique_event _monarchWaitInterrupt;