diff --git a/gtsam/geometry/SOn.h b/gtsam/geometry/SOn.h
index a827b3a63..06031b093 100644
--- a/gtsam/geometry/SOn.h
+++ b/gtsam/geometry/SOn.h
@@ -53,6 +53,9 @@ class SO : public LieGroup<SO<N>, internal::DimensionSO(N)> {
   using VectorN2 = Eigen::Matrix<double, internal::NSquaredSO(N), 1>;
   using MatrixDD = Eigen::Matrix<double, dimension, dimension>;
 
+ public:
+  EIGEN_MAKE_ALIGNED_OPERATOR_NEW
+
  protected:
   MatrixNN matrix_;  ///< Rotation matrix
 
diff --git a/gtsam/linear/GaussianBayesNet.cpp b/gtsam/linear/GaussianBayesNet.cpp
index bc96452b9..4118d8f71 100644
--- a/gtsam/linear/GaussianBayesNet.cpp
+++ b/gtsam/linear/GaussianBayesNet.cpp
@@ -194,9 +194,9 @@ namespace gtsam {
       if(cg->get_model()) {
         Vector diag = cg->R().diagonal();
         cg->get_model()->whitenInPlace(diag);
-        logDet += diag.unaryExpr(ptr_fun<double,double>(log)).sum();
+        logDet += diag.unaryExpr([](double c){return log(c);}).sum();
       } else {
-        logDet += cg->R().diagonal().unaryExpr(ptr_fun<double,double>(log)).sum();
+        logDet += cg->R().diagonal().unaryExpr([](double c){return log(c);}).sum();
       }
     }
     return logDet;