diff --git a/contrib/other-builds/moses2/Jamfile b/contrib/other-builds/moses2/Jamfile
index 415ae0cc1..959eb1cf0 100644
--- a/contrib/other-builds/moses2/Jamfile
+++ b/contrib/other-builds/moses2/Jamfile
@@ -55,7 +55,6 @@ external-lib boost_serialization ;
 		Search/CubePruning/Misc.cpp
  	 	Search/CubePruning/Search.cpp
  	 	Search/CubePruning/Stack.cpp 
- 	 	Search/CubePruning/Stacks.cpp 
 		legacy/Bitmap.cpp
 		legacy/Bitmaps.cpp
 		legacy/Factor.cpp
diff --git a/contrib/other-builds/moses2/Search/CubePruning/Search.h b/contrib/other-builds/moses2/Search/CubePruning/Search.h
index 1cd619b37..7dcc3c7dd 100644
--- a/contrib/other-builds/moses2/Search/CubePruning/Search.h
+++ b/contrib/other-builds/moses2/Search/CubePruning/Search.h
@@ -9,7 +9,7 @@
 #include <boost/pool/pool_alloc.hpp>
 #include "../Search.h"
 #include "Misc.h"
-#include "Stacks.h"
+#include "Stack.h"
 #include "../../legacy/Range.h"
 
 namespace Moses2
diff --git a/contrib/other-builds/moses2/Search/CubePruning/Stacks.cpp b/contrib/other-builds/moses2/Search/CubePruning/Stacks.cpp
deleted file mode 100644
index 76007a675..000000000
--- a/contrib/other-builds/moses2/Search/CubePruning/Stacks.cpp
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * Stacks.cpp
- *
- *  Created on: 6 Nov 2015
- *      Author: hieu
- */
-
-#include "Stacks.h"
-#include "../../System.h"
-#include "../Manager.h"
-
-using namespace std;
-
-namespace Moses2
-{
-
-namespace NSCubePruning
-{
-
-Stacks::Stacks(const Manager &mgr)
-:m_mgr(mgr)
-{
-}
-
-Stacks::~Stacks()
-{
-}
-
-void Stacks::Init(size_t numStacks)
-{
-	m_stacks.resize(numStacks, NULL);
-}
-
-void Stacks::ReadyToDecode(size_t ind)
-{
-	if (ind) {
-		// reuse previous stack
-		Stack *stack = m_stacks[ind - 1];
-		stack->Clear();
-
-		m_stacks[ind - 1] = NULL;
-		m_stacks[ind] = stack;
-	}
-	else {
-		m_stacks[ind] = new (m_mgr.GetPool().Allocate<Stack>()) Stack(m_mgr);
-	}
-}
-
-
-std::ostream& operator<<(std::ostream &out, const Stacks &obj)
-{
-  for (size_t i = 0; i < obj.GetSize(); ++i) {
-	  const Stack *stack = obj.m_stacks[i];
-	  if (stack) {
-		  out << stack->GetHypoSize() << " ";
-	  }
-	  else {
-		  out << "N ";
-	  }
-  }
-
-  return out;
-}
-
-void Stacks::Add(const Hypothesis *hypo, Recycler<Hypothesis*> &hypoRecycle)
-{
-	size_t numWordsCovered = hypo->GetBitmap().GetNumWordsCovered();
-	//cerr << "numWordsCovered=" << numWordsCovered << endl;
-	Stack &stack = *m_stacks[numWordsCovered];
-	stack.Add(hypo, hypoRecycle);
-
-}
-
-}
-
-}
-
-
diff --git a/contrib/other-builds/moses2/Search/CubePruning/Stacks.h b/contrib/other-builds/moses2/Search/CubePruning/Stacks.h
deleted file mode 100644
index 8e8d9195f..000000000
--- a/contrib/other-builds/moses2/Search/CubePruning/Stacks.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Stacks.h
- *
- *  Created on: 6 Nov 2015
- *      Author: hieu
- */
-
-#pragma once
-
-#include <vector>
-#include "Stack.h"
-#include "../../Recycler.h"
-
-namespace Moses2
-{
-class Manager;
-
-namespace NSCubePruning
-{
-
-class Stacks {
-	  friend std::ostream& operator<<(std::ostream &, const Stacks &);
-public:
-	Stacks(const Manager &mgr);
-	virtual ~Stacks();
-
-	void Init(size_t numStacks);
-	void ReadyToDecode(size_t ind);
-
-	size_t GetSize() const
-	{ return m_stacks.size(); }
-
-	const Stack &Back() const
-    { return *m_stacks.back(); }
-
-    Stack &operator[](size_t ind)
-    { return *m_stacks[ind]; }
-
-	void Add(const Hypothesis *hypo, Recycler<Hypothesis*> &hypoRecycle);
-
-protected:
-	const Manager &m_mgr;
-	std::vector<Stack*> m_stacks;
-};
-
-
-}
-
-}
-
-