diff --git a/matlab/unstable_examples/plot_projected_landmarks.m b/matlab/unstable_examples/plot_projected_landmarks.m
index cfe08ec54..6b8101844 100644
--- a/matlab/unstable_examples/plot_projected_landmarks.m
+++ b/matlab/unstable_examples/plot_projected_landmarks.m
@@ -23,7 +23,7 @@ z = zeros(1,nrMeasurements);
 for i = 0:measurement_keys.size-1
     key = measurement_keys.at(i);
     key_index = gtsam.symbolIndex(key);
-    p = landmarks.at(gtsam.symbol('l',key_index));
+    p = landmarks.atPoint3(gtsam.symbol('l',key_index));
     
     x(i+1) = p.x;
     y(i+1) = p.y;
diff --git a/matlab/unstable_examples/project_landmarks.m b/matlab/unstable_examples/project_landmarks.m
index b11c43bc5..629c6d994 100644
--- a/matlab/unstable_examples/project_landmarks.m
+++ b/matlab/unstable_examples/project_landmarks.m
@@ -8,7 +8,7 @@ function [ measurements ] = project_landmarks( pose, landmarks, K )
     measurements = Values;
     
     for i=1:size(landmarks)-1
-        z = camera.project(landmarks.at(symbol('l',i)));
+        z = camera.project(landmarks.atPoint3(symbol('l',i)));
         
         % check bounding box
         if z.x < 0 || z.x > 1280