diff --git a/src/landmark/landmark_base.cpp b/src/landmark/landmark_base.cpp
index 3db9d6dbdc7b2aa7a1d20e7b8c6734303855c75f..19c4730cb1577fb293b1086dbbbeb6e559645d75 100644
--- a/src/landmark/landmark_base.cpp
+++ b/src/landmark/landmark_base.cpp
@@ -111,6 +111,7 @@ YAML::Node LandmarkBase::toYaml() const
     node["id"] = landmark_id_;
     node["type"] = node_type_;
     node["states"] = HasStateBlocks::getSpecs().toYaml();
+    node["transformable"] = getP()->isTransformable();
     return node;
 }