1 files changed, 1 insertions, 0 deletions
diff --git a/decoder/tagger.cc b/decoder/tagger.cc
index 54890e85..63e855c8 100644
--- a/decoder/tagger.cc
+++ b/decoder/tagger.cc
@@ -54,6 +54,7 @@ struct TaggerImpl {
       const int new_node_id = forest->AddNode(kXCAT)->id_;
       for (int k = 0; k < tagset_.size(); ++k) {
         TRulePtr rule(TRule::CreateLexicalRule(src, tagset_[k]));
+        rule->lhs_ = kXCAT;
         Hypergraph::Edge* edge = forest->AddEdge(rule, Hypergraph::TailNodeVector());
         edge->i_ = i;
         edge->j_ = i+1;