diff --git a/Thing.h b/Thing.h
index 2e5e467..2aad418 100644
--- a/Thing.h
+++ b/Thing.h
@@ -47,6 +47,7 @@ class Thing {
   /// @remark When this Thing has a parent, the orientation is relative to the
   /// parent's orientation
   Quaternion orientation;
+  Quaternion worldOrientation;
 
   /// @brief Sets the parent Thing
   /// @param parent The Thing which should become the parnet