diff --git a/gtsam/linear/JacobianFactor.h b/gtsam/linear/JacobianFactor.h
index b90012822..99ea91cd9 100644
--- a/gtsam/linear/JacobianFactor.h
+++ b/gtsam/linear/JacobianFactor.h
@@ -185,7 +185,7 @@ namespace gtsam {
     /// Return the diagonal of the Hessian for this factor
     virtual VectorValues hessianDiagonal() const;
 
-    /* ************************************************************************* */
+    /// Raw memory access version of hessianDiagonal
     virtual void hessianDiagonal(double* d) const;
 
     /// Return the block diagonal of the Hessian for this factor