1 files changed, 8 insertions, 0 deletions
diff --git a/decoder/hg_test.h b/decoder/hg_test.h
index 2e308c37..c098961d 100644
--- a/decoder/hg_test.h
+++ b/decoder/hg_test.h
@@ -64,12 +64,20 @@ Name HGjsons[]= {
 
 }
 
+void AddNullEdge(Hypergraph* hg) {
+  TRule x;
+  x.arity_ = 0;
+  hg->nodes_[0].in_edges_.push_back(hg->AddEdge(TRulePtr(new TRule(x)), Hypergraph::TailNodeVector())->id_);
+}
+
 void HGSetup::CreateTinyLatticeHG(Hypergraph* hg) {
     Json(hg,HGjsons[TinyLatticeHG]);
+  AddNullEdge(hg);
 }
 
 void HGSetup::CreateLatticeHG(Hypergraph* hg) {
   Json(hg,HGjsons[LatticeHG]);
+  AddNullEdge(hg);
 }
 
 void HGSetup::CreateHG_tiny(Hypergraph* hg) {