diff --git a/gtsam/nonlinear/Expression-inl.h b/gtsam/nonlinear/Expression-inl.h
index 1074400c9..8c3f8b24c 100644
--- a/gtsam/nonlinear/Expression-inl.h
+++ b/gtsam/nonlinear/Expression-inl.h
@@ -672,7 +672,6 @@ class UnaryExpression: public FunctionalNode<T, boost::mpl::vector<A1> >::type {
 
 public:
 
-  typedef T (A1::*Method)(OJ1) const;
   typedef boost::function<T(const A1&, OJ1)> Function;
   typedef typename FunctionalNode<T, boost::mpl::vector<A1> >::type Base;
   typedef typename Base::Record Record;
@@ -721,7 +720,6 @@ class BinaryExpression:
 
 public:
 
-  typedef T (A1::*Method)(const A2&, OJ1, OJ2) const;
   typedef boost::function<T(const A1&, const A2&, OJ1, OJ2)> Function;
   typedef typename FunctionalNode<T, boost::mpl::vector<A1, A2> >::type Base;
   typedef typename Base::Record Record;
@@ -779,7 +777,6 @@ class TernaryExpression:
 
 public:
 
-  typedef T (A1::*Method)(const A2&, const A3&, OJ1, OJ2, OJ3) const;
   typedef boost::function<T(const A1&, const A2&, const A3&, OJ1, OJ2, OJ3)> Function;
   typedef typename FunctionalNode<T, boost::mpl::vector<A1, A2, A3> >::type Base;
   typedef typename Base::Record Record;
diff --git a/gtsam/nonlinear/Expression.h b/gtsam/nonlinear/Expression.h
index cf87ac2ce..fe07de039 100644
--- a/gtsam/nonlinear/Expression.h
+++ b/gtsam/nonlinear/Expression.h
@@ -75,7 +75,7 @@ public:
   /// Construct a nullary method expression
   template<typename A>
   Expression(const Expression<A>& expression,
-      typename UnaryExpression<T, A>::Method method) :
+      T (A::*method)(typename UnaryExpression<T, A>::OJ1) const) :
       root_(new UnaryExpression<T, A>(boost::bind(method, _1, _2), expression)) {
   }
 
@@ -89,7 +89,8 @@ public:
   /// Construct a unary method expression
   template<typename A1, typename A2>
   Expression(const Expression<A1>& expression1,
-      typename BinaryExpression<T, A1, A2>::Method method,
+      T (A1::*method)(const A2&, typename BinaryExpression<T, A1, A2>::OJ1,
+          typename BinaryExpression<T, A1, A2>::OJ2) const,
       const Expression<A2>& expression2) :
       root_(
           new BinaryExpression<T, A1, A2>(boost::bind(method, _1, _2, _3, _4),
@@ -106,7 +107,10 @@ public:
   /// Construct a binary method expression
   template<typename A1, typename A2, typename A3>
   Expression(const Expression<A1>& expression1,
-      typename TernaryExpression<T, A1, A2, A3>::Method method,
+      T (A1::*method)(const A2&, const A3&,
+          typename TernaryExpression<T, A1, A2, A3>::OJ1,
+          typename TernaryExpression<T, A1, A2, A3>::OJ2,
+          typename TernaryExpression<T, A1, A2, A3>::OJ3) const,
       const Expression<A2>& expression2, const Expression<A3>& expression3) :
       root_(
           new TernaryExpression<T, A1, A2, A3>(