diff --git a/src/openrct2/interface/Window_internal.h b/src/openrct2/interface/Window_internal.h
index 6b44597588..631a36c4ab 100644
--- a/src/openrct2/interface/Window_internal.h
+++ b/src/openrct2/interface/Window_internal.h
@@ -102,8 +102,11 @@ struct rct_window
     void RemoveViewport();
 
     rct_window() = default;
+    rct_window(rct_window&) = delete;
     virtual ~rct_window() = default;
 
+    rct_window& operator=(const rct_window&) = delete;
+
     virtual bool IsLegacy()
     {
         return true;