diff --git a/src/libslic3r/AABBMesh.cpp b/src/libslic3r/AABBMesh.cpp
index ca7042c..4741632 100644
--- a/src/libslic3r/AABBMesh.cpp
+++ b/src/libslic3r/AABBMesh.cpp
@@ -11,7 +11,7 @@
 #endif
 
 namespace Slic3r {
-
+//YYY
 class AABBMesh::AABBImpl {
 private:
     AABBTreeIndirect::Tree3f m_tree;