2 files changed, 7 insertions, 5 deletions
diff --git a/decoder/hg_intersect.cc b/decoder/hg_intersect.cc
index e9a91061..ad5b701a 100644
--- a/decoder/hg_intersect.cc
+++ b/decoder/hg_intersect.cc
@@ -79,7 +79,9 @@ static bool FastLinearIntersect(const Lattice& target, Hypergraph* hg) {
   return (cov.size() == target.size());
 }
 
-bool HG::Intersect(const Lattice& target, Hypergraph* hg) {
+namespace HG {
+
+bool Intersect(const Lattice& target, Hypergraph* hg) {
   // there are a number of faster algorithms available for restricted
   // classes of hypergraph and/or target.
   if (hg->IsLinearChain() && target.IsSentence())
@@ -160,3 +162,5 @@ bool HG::Intersect(const Lattice& target, Hypergraph* hg) {
   return true;
 }
 
+}
+
diff --git a/decoder/hg_intersect.h b/decoder/hg_intersect.h
index 826bdaae..29a5ea2a 100644
--- a/decoder/hg_intersect.h
+++ b/decoder/hg_intersect.h
@@ -1,13 +1,11 @@
 #ifndef _HG_INTERSECT_H_
 #define _HG_INTERSECT_H_
 
-#include <vector>
-
 #include "lattice.h"
 
 class Hypergraph;
-struct HG {
-  static bool Intersect(const Lattice& target, Hypergraph* hg);
+namespace HG {
+  bool Intersect(const Lattice& target, Hypergraph* hg);
 };
 
 #endif