diff --git a/gtsam/navigation/BarometricFactor.cpp b/gtsam/navigation/BarometricFactor.cpp
index 3246bed68..2f0ff7436 100644
--- a/gtsam/navigation/BarometricFactor.cpp
+++ b/gtsam/navigation/BarometricFactor.cpp
@@ -46,8 +46,8 @@ Vector BarometricFactor::evaluateError(const Pose3& p, const double& bias,
                                        boost::optional<Matrix&> H,
                                        boost::optional<Matrix&> H2) const {
     Matrix tH;
-    Vector ret =(Vector(1) << (p.translation(tH).z() + bias - nT_)).finished();
-    if (H) (*H) = tH.block<1,6>(2,0);
+    Vector ret = (Vector(1) << (p.translation(tH).z() + bias - nT_)).finished();
+    if (H) (*H) = tH.block<1, 6>(2, 0);
     if (H2) (*H2) = (Matrix(1, 1) << 1.0).finished();
     return ret;
 }