diff --git a/gtsam/slam/InitializePose3.cpp b/gtsam/slam/InitializePose3.cpp
index f18380b20..c0e2ef6d9 100644
--- a/gtsam/slam/InitializePose3.cpp
+++ b/gtsam/slam/InitializePose3.cpp
@@ -235,7 +235,7 @@ Values computeOrientationsGradient(const NonlinearFactorGraph& pose3Graph, const
   std::cout << "nr of gradient iterations " << it <<  std::endl;
 
   // Return correct rotations
-  const Rot3& Rref = inverseRot.at<Rot3>(keyAnchor);
+  const Rot3& Rref = Rot3(); // inverseRot.at<Rot3>(keyAnchor);
   Values estimateRot;
   BOOST_FOREACH(const Values::ConstKeyValuePair& key_value, inverseRot) {
     Key key = key_value.key;