1 files changed, 1 insertions, 0 deletions
diff --git a/module.cc b/module.cc
index f7e744d..66e7c73 100644
--- a/module.cc
+++ b/module.cc
@@ -189,6 +189,7 @@ void initialize_builtin_modules()
 	register_builtin_csgops();
 	register_builtin_transform();
 	register_builtin_primitives();
+	register_builtin_surface();
 	register_builtin_control();
 	register_builtin_render();
 	register_builtin_dxf_linear_extrude();