diff --git a/include/geode/model/representation/core/mapping.hpp b/include/geode/model/representation/core/mapping.hpp
index d96ca8466..7f2cfb491 100644
--- a/include/geode/model/representation/core/mapping.hpp
+++ b/include/geode/model/representation/core/mapping.hpp
@@ -105,6 +105,8 @@ namespace geode
 
     using ModelAddedComponentMapping = ModelMapping< std::vector< uuid > >;
 
+    using ModelRemovedComponentMapping = ModelMapping< std::vector< uuid > >;
+
     using ModelUnchangedComponentMapping = ModelMapping< std::vector< uuid > >;
 
     using MeshElementMapping = GenericMapping< MeshElement, MeshElement >;
@@ -187,6 +189,7 @@ namespace geode
     {
         ModelGenericMapping component_mapping;
         ModelAddedComponentMapping added_components;
+        ModelRemovedComponentMapping removed_components;
         ModelUnchangedComponentMapping unchanged_components;
     };