diff --git a/AABB_tree/include/CGAL/AABB_tree.h b/AABB_tree/include/CGAL/AABB_tree.h
index f022586754a..5f0521e219f 100644
--- a/AABB_tree/include/CGAL/AABB_tree.h
+++ b/AABB_tree/include/CGAL/AABB_tree.h
@@ -116,8 +116,9 @@ namespace CGAL {
     /// class using `traits`.
     AABB_tree(const AABBTraits& traits = AABBTraits());
 
-    // move constructor and assignment operator
+    /// move constructor
     AABB_tree(Self&&) noexcept;
+    /// assignment operator
     Self& operator=(Self&&) noexcept;
 
     // Disabled copy constructor & assignment operator