diff --git a/content/geometry/object-human/human-structure.adoc b/content/geometry/object-human/human-structure.adoc
index d434114b..9bff3506 100644
--- a/content/geometry/object-human/human-structure.adoc
+++ b/content/geometry/object-human/human-structure.adoc
@@ -207,7 +207,7 @@ The Root bone is the parent bone for all other bones. It can be used to control
 2+^| Root
 
 | *Origin*
-| World coordinate system
+| Center of the bounding box on the ground
 
 | *x-axis*
 | Pointing forwards