--- a/graal/com.oracle.graal.graph/src/com/oracle/graal/graph/Node.java	Thu Jan 31 17:33:27 2013 +0100
+++ b/graal/com.oracle.graal.graph/src/com/oracle/graal/graph/Node.java	Thu Jan 31 17:45:25 2013 +0100
@@ -241,11 +241,9 @@
         return nodeClass;
     }
 
-    // TODO (thomaswue): Do not allow to replace with null.
     private boolean checkReplaceWith(Node other) {
         assert assertFalse(other == this, "cannot replace a node with itself");
         assert assertFalse(isDeleted(), "cannot replace deleted node");
-        // assert assertTrue(other != null, "cannot replace with null node");
         assert assertTrue(other == null || !other.isDeleted(), "cannot replace with deleted node %s", other);
         assert assertTrue(other == null || other.graph() == graph, "cannot replace with node in different graph: %s", other == null ? null : other.graph());
         return true;