diff --git a/src/hb-serialize.hh b/src/hb-serialize.hh
index 328c7b4..ece4d92 100644
--- a/src/hb-serialize.hh
+++ b/src/hb-serialize.hh
@@ -51,12 +51,6 @@
 };
 HB_MARK_AS_FLAG_T (hb_serialize_error_t);
 
-// This is a 0 byte wide offset, used to add virtual links to the serializer object graph.
-// It does not correspond to a real offset and exists soley to enforce an ordering constraint
-// in the graph's packed order.
-struct VirtualOffset {
-};
-
 struct hb_serialize_context_t
 {
   typedef unsigned objidx_t;
@@ -364,7 +358,7 @@
       assert (packed.tail ()->head == tail);
   }
 
-  void add_link (VirtualOffset &ofs, objidx_t objidx)
+  void add_virtual_link (objidx_t objidx)
   {
     // This link is not associated with an actual offset and exists merely to enforce
     // an ordering constraint.
@@ -374,7 +368,6 @@
       return;
 
     assert (current);
-    assert (current->head <= (const char *) &ofs);
 
     auto& link = *current->links.push ();
     if (current->links.in_error ())
diff --git a/src/test-repacker.cc b/src/test-repacker.cc
index 66e5aa1..4df0636 100644
--- a/src/test-repacker.cc
+++ b/src/test-repacker.cc
@@ -100,8 +100,7 @@
 static void add_virtual_offset (unsigned id,
                                 hb_serialize_context_t* c)
 {
-  VirtualOffset* offset = c->start_embed<VirtualOffset> ();
-  c->add_link (*offset, id);
+  c->add_virtual_link (id);
 }
 
 static void