diff --git a/src/compas/geometry/shapes/box.py b/src/compas/geometry/shapes/box.py
index 309e28963d3d..1a6260999ba6 100644
--- a/src/compas/geometry/shapes/box.py
+++ b/src/compas/geometry/shapes/box.py
@@ -41,7 +41,7 @@ class Box(Shape):
         The size of the box in the box frame's x direction.
     ysize : float
         The size of the box in the box frame's y direction.
-    ysize : float
+    zsize : float
         The size of the box in the box frame's z direction.
     xmin : float, read-only
         Minimum value along local X axis.