diff --git a/gtsam_unstable/slam/expressions.h b/gtsam_unstable/slam/expressions.h
index 4a63a7de0..009be46a1 100644
--- a/gtsam_unstable/slam/expressions.h
+++ b/gtsam_unstable/slam/expressions.h
@@ -20,7 +20,11 @@ typedef Expression<Rot2> Rot2_;
 typedef Expression<Pose2> Pose2_;
 
 Point2_ transform_to(const Pose2_& x, const Point2_& p) {
-  return Point2_(x, &Pose2::transform_to, p);
+  Point2(Pose2::*transform)(const Point2& p,
+                           boost::optional<Matrix23&> H1,
+                           boost::optional<Matrix2&> H2) const = &Pose2::transform_to;
+
+  return Point2_(x, transform, p);
 }
 
 // 3D Geometry
@@ -30,7 +34,12 @@ typedef Expression<Rot3> Rot3_;
 typedef Expression<Pose3> Pose3_;
 
 Point3_ transform_to(const Pose3_& x, const Point3_& p) {
-  return Point3_(x, &Pose3::transform_to, p);
+
+  Point3(Pose3::*transform)(const Point3& p, 
+                           boost::optional<Matrix36&> Dpose,
+                           boost::optional<Matrix3&> Dpoint) const = &Pose3::transform_to;
+
+  return Point3_(x, transform, p);
 }
 
 // Projection