diff --git a/irr/src/SkinnedMesh.cpp b/irr/src/SkinnedMesh.cpp
index 20602cf9c..e9dcc40f5 100644
--- a/irr/src/SkinnedMesh.cpp
+++ b/irr/src/SkinnedMesh.cpp
@@ -409,6 +409,7 @@ void SkinnedMesh::recalculateBaseBoundingBoxes() {
 	calculateBufferBoundingBoxes();
 }
 
+// TODO this can be removed: Our API guarantees topo sorting if we prevent mutation
 void SkinnedMesh::topoSortJoints()
 {
 	size_t n = AllJoints.size();