diff --git a/gtsam/navigation/tests/testPoseVelocityBias.cpp b/gtsam/navigation/tests/testPoseVelocityBias.cpp
index cc2a47498..0b897bc6e 100644
--- a/gtsam/navigation/tests/testPoseVelocityBias.cpp
+++ b/gtsam/navigation/tests/testPoseVelocityBias.cpp
@@ -31,7 +31,7 @@ using namespace gtsam;
 Vector9 error(const PoseVelocityBias& pvb1, const PoseVelocityBias& pvb2) {
   Matrix3 R1 = pvb1.pose.rotation().matrix();
   // Ri.transpose() translate the error from the global frame into pose1's frame
-  const Vector3 fp = R1.transpose() * (pvb2.pose.translation() - pvb1.pose.translation()).vector();
+  const Vector3 fp = R1.transpose() * (pvb2.pose.translation() - pvb1.pose.translation());
   const Vector3 fv = R1.transpose() * (pvb2.velocity - pvb1.velocity);
   const Rot3 R1BetweenR2 = pvb1.pose.rotation().between(pvb2.pose.rotation());
   const Vector3 fR = Rot3::Logmap(R1BetweenR2);