diff --git a/gtsam/slam/SmartFactorBase.h b/gtsam/slam/SmartFactorBase.h
index 160395997..eacca44b5 100644
--- a/gtsam/slam/SmartFactorBase.h
+++ b/gtsam/slam/SmartFactorBase.h
@@ -230,7 +230,6 @@ public:
         Z z3 = measured_.at(i);
         if(isnan(z3.vector()[1])){ // .. and the right pixel is invalid
           // delete influence of right point on jacobian Fs
-          std::cout << "unwhitenedError:: isnan(z3->uR()" << z3.vector() << std::endl;
           MatrixZD& Fi = Fs->at(i);
           for(size_t ii=0; ii<Dim; ii++)
             Fi(1,ii) = 0.0;
diff --git a/gtsam_unstable/slam/tests/testSmartStereoProjectionPoseFactor.cpp b/gtsam_unstable/slam/tests/testSmartStereoProjectionPoseFactor.cpp
index ef2f80c31..4401f241c 100644
--- a/gtsam_unstable/slam/tests/testSmartStereoProjectionPoseFactor.cpp
+++ b/gtsam_unstable/slam/tests/testSmartStereoProjectionPoseFactor.cpp
@@ -60,6 +60,8 @@ static StereoPoint2 measurement1(323.0, 300.0, 240.0); //potentially use more re
 static Pose3 body_P_sensor1(Rot3::RzRyRx(-M_PI_2, 0.0, -M_PI_2),
     Point3(0.25, -0.10, 1.0));
 
+static double missing_uR = std::numeric_limits<double>::quiet_NaN();
+
 vector<StereoPoint2> stereo_projectToMultipleCameras(const StereoCamera& cam1,
     const StereoCamera& cam2, const StereoCamera& cam3, Point3 landmark) {
 
@@ -167,7 +169,6 @@ TEST( SmartProjectionPoseFactor, noiselessWithMissingMeasurements ) {
    // 1. Project two landmarks into two cameras and triangulate
    StereoPoint2 level_uv = level_camera.project(landmark);
    StereoPoint2 level_uv_right = level_camera_right.project(landmark);
-   double missing_uR = std::numeric_limits<double>::quiet_NaN();
    StereoPoint2 level_uv_right_missing(level_uv_right.uL(),missing_uR,level_uv_right.v());
 
    Values values;
@@ -462,6 +463,78 @@ TEST( SmartStereoProjectionPoseFactor, jacobianSVD ) {
   EXPECT(assert_equal(pose3, result.at<Pose3>(x3)));
 }
 
+/* *************************************************************************/
+TEST( SmartStereoProjectionPoseFactor, jacobianSVDwithMissingValues ) {
+
+  vector<Key> views;
+  views.push_back(x1);
+  views.push_back(x2);
+  views.push_back(x3);
+
+  // create first camera. Looking along X-axis, 1 meter above ground plane (x-y)
+  Pose3 pose1 = Pose3(Rot3::Ypr(-M_PI / 2, 0., -M_PI / 2), Point3(0, 0, 1));
+  StereoCamera cam1(pose1, K);
+  // create second camera 1 meter to the right of first camera
+  Pose3 pose2 = pose1 * Pose3(Rot3(), Point3(1, 0, 0));
+  StereoCamera cam2(pose2, K);
+  // create third camera 1 meter above the first camera
+  Pose3 pose3 = pose1 * Pose3(Rot3(), Point3(0, -1, 0));
+  StereoCamera cam3(pose3, K);
+
+  // three landmarks ~5 meters infront of camera
+  Point3 landmark1(5, 0.5, 1.2);
+  Point3 landmark2(5, -0.5, 1.2);
+  Point3 landmark3(3, 0, 3.0);
+
+  // 1. Project three landmarks into three cameras and triangulate
+  vector<StereoPoint2> measurements_cam1 = stereo_projectToMultipleCameras(cam1,
+      cam2, cam3, landmark1);
+  vector<StereoPoint2> measurements_cam2 = stereo_projectToMultipleCameras(cam1,
+      cam2, cam3, landmark2);
+  vector<StereoPoint2> measurements_cam3 = stereo_projectToMultipleCameras(cam1,
+      cam2, cam3, landmark3);
+
+  // DELETE SOME MEASUREMENTS
+  StereoPoint2 sp = measurements_cam1[1];
+  measurements_cam1[1] = StereoPoint2(sp.uL(), missing_uR, sp.v());
+  sp = measurements_cam2[2];
+  measurements_cam2[2] = StereoPoint2(sp.uL(), missing_uR, sp.v());
+
+  SmartStereoProjectionParams params;
+  params.setLinearizationMode(JACOBIAN_SVD);
+
+  SmartStereoProjectionPoseFactor::shared_ptr smartFactor1( new SmartStereoProjectionPoseFactor(model, params));
+  smartFactor1->add(measurements_cam1, views, K);
+
+  SmartStereoProjectionPoseFactor::shared_ptr smartFactor2(new SmartStereoProjectionPoseFactor(model, params));
+  smartFactor2->add(measurements_cam2, views, K);
+
+  SmartStereoProjectionPoseFactor::shared_ptr smartFactor3(new SmartStereoProjectionPoseFactor(model, params));
+  smartFactor3->add(measurements_cam3, views, K);
+
+  const SharedDiagonal noisePrior = noiseModel::Isotropic::Sigma(6, 0.10);
+
+  NonlinearFactorGraph graph;
+  graph.push_back(smartFactor1);
+  graph.push_back(smartFactor2);
+  graph.push_back(smartFactor3);
+  graph.push_back(PriorFactor<Pose3>(x1, pose1, noisePrior));
+  graph.push_back(PriorFactor<Pose3>(x2, pose2, noisePrior));
+
+  //  Pose3 noise_pose = Pose3(Rot3::Ypr(-M_PI/10, 0., -M_PI/10), Point3(0.5,0.1,0.3)); // noise from regular projection factor test below
+  Pose3 noise_pose = Pose3(Rot3::Ypr(-M_PI / 100, 0., -M_PI / 100),
+      Point3(0.1, 0.1, 0.1)); // smaller noise
+  Values values;
+  values.insert(x1, pose1);
+  values.insert(x2, pose2);
+  values.insert(x3, pose3 * noise_pose);
+
+  Values result;
+  LevenbergMarquardtOptimizer optimizer(graph, values, lm_params);
+  result = optimizer.optimize();
+  EXPECT(assert_equal(pose3, result.at<Pose3>(x3),1e-7));
+}
+
 /* *************************************************************************/
 TEST( SmartStereoProjectionPoseFactor, landmarkDistance ) {