diff --git a/docs/lib-ring_extrude.md b/docs/lib-ring_extrude.md
index 6b94fb40..2464f8a8 100644
--- a/docs/lib-ring_extrude.md
+++ b/docs/lib-ring_extrude.md
@@ -25,10 +25,10 @@ If your 2D shape is not solid, indexes of triangles are required. See [polysecti
 	include <ring_extrude.scad>;
 
 	shape_pts = [
-		[-2, -10],
-		[-2, 10],
+		[2, -10],
 		[2, 10],
-		[2, -10]
+		[-2, 10],
+		[-2, -10]
 	];
 
 	ring_extrude(shape_pts, radius = 50, twist = 180);
@@ -41,10 +41,10 @@ If your 2D shape is not solid, indexes of triangles are required. See [polysecti
 	include <ring_extrude.scad>;
 
 	shape_pts = [
-		[-2, -10],
-		[-2, 10],
+		[2, -10],
 		[2, 10],
-		[2, -10]
+		[-2, 10],
+		[-2, -10]
 	];
 
 	ring_extrude(shape_pts, radius = 50, angle = 180, scale = 2);