diff --git a/src/CGALRenderer.cc b/src/CGALRenderer.cc
index d9f4c698..55d96d95 100644
--- a/src/CGALRenderer.cc
+++ b/src/CGALRenderer.cc
@@ -128,7 +128,6 @@ Response CGALRenderer::visit(const State &state, const AbstractNode &node)
 	return ContinueTraversal;
 }
 
-#if 0
 Response CGALRenderer::visit(const State &state, const AbstractIntersectionNode &node)
 {
 	if (state.isPrefix() && isCached(node)) return PruneTraversal;
@@ -162,7 +161,6 @@ Response CGALRenderer::visit(const State &state, const CsgNode &node)
 	}
 	return ContinueTraversal;
 }
-#endif
 
 Response CGALRenderer::visit(const State &state, const TransformNode &node)
 {
diff --git a/src/CGALRenderer.h b/src/CGALRenderer.h
index c14cacd9..fc7e0c4f 100644
--- a/src/CGALRenderer.h
+++ b/src/CGALRenderer.h
@@ -27,8 +27,8 @@ public:
   virtual ~CGALRenderer() {}
 
   virtual Response visit(const State &state, const AbstractNode &node);
-// 	virtual Response visit(const State &state, const AbstractIntersectionNode &node);
-// 	virtual Response visit(const State &state, const CsgNode &node);
+ 	virtual Response visit(const State &state, const AbstractIntersectionNode &node);
+ 	virtual Response visit(const State &state, const CsgNode &node);
  	virtual Response visit(const State &state, const TransformNode &node);
 	virtual Response visit(const State &state, const AbstractPolyNode &node);