diff --git a/lua/shape.lua b/lua/shape.lua
index f28fb8d..960a19c 100644
--- a/lua/shape.lua
+++ b/lua/shape.lua
@@ -47,6 +47,10 @@ function noordstar_caves.register_shape(def)
     end
 end
 
+function noordstar_caves.unregister_shape(name)
+    noordstar_caves.registered_shapes[name] = nil
+end
+
 function noordstar_caves.clear_registered_shapes()
     noordstar_caves.registered_shapes = {}
 end