diff --git a/docs/lib2x-polygon_hull.md b/docs/lib2x-polygon_hull.md
index 40628105..e41da526 100644
--- a/docs/lib2x-polygon_hull.md
+++ b/docs/lib2x-polygon_hull.md
@@ -1,4 +1,4 @@
-# polyhedron_hull
+# polygon_hull
 
 Create a convex polygon by hulling a list of points. It avoids using `hull` and small 2D primitives to create the polygon.