diff --git a/Shapes.md b/Shapes.md
index 18a2a4c..c8f7c58 100644
--- a/Shapes.md
+++ b/Shapes.md
@@ -1,12 +1,12 @@
 ## List of Shapes
 * [Circle](#circle)
 * [Cube](#cube)
-* [Cube Outline](#cubeoutline)
-* [Helix](#helixoutline)
+* [Cube Outline](#cube-outline)
+* [Helix](#helix)
 * [Line](#line)
 * [Polygon](#polygon)
-* [Polygon Outline](#polygonoutline)
-* [RandomSphere](#randomsphere)
+* [Polygon Outline](#polygon-outline)
+* [RandomSphere](#random-sphere)
 * [Sphere](#sphere)
 
 These are all the basic shapes you can get with Biosphere2.