diff --git a/gtsam/discrete/DiscreteBayesTree.h b/gtsam/discrete/DiscreteBayesTree.h
index 3d6e016fd..29da5817e 100644
--- a/gtsam/discrete/DiscreteBayesTree.h
+++ b/gtsam/discrete/DiscreteBayesTree.h
@@ -45,6 +45,7 @@ class GTSAM_EXPORT DiscreteBayesTreeClique
   typedef boost::shared_ptr<This> shared_ptr;
   typedef boost::weak_ptr<This> weak_ptr;
   DiscreteBayesTreeClique() {}
+  virtual ~DiscreteBayesTreeClique() {}
   DiscreteBayesTreeClique(
       const boost::shared_ptr<DiscreteConditional>& conditional)
       : Base(conditional) {}
diff --git a/gtsam/linear/GaussianBayesTree.h b/gtsam/linear/GaussianBayesTree.h
index b6f5acd52..e2d8ae87a 100644
--- a/gtsam/linear/GaussianBayesTree.h
+++ b/gtsam/linear/GaussianBayesTree.h
@@ -41,6 +41,7 @@ namespace gtsam {
     typedef boost::shared_ptr<This> shared_ptr;
     typedef boost::weak_ptr<This> weak_ptr;
     GaussianBayesTreeClique() {}
+    virtual ~GaussianBayesTreeClique() {}
     GaussianBayesTreeClique(const boost::shared_ptr<GaussianConditional>& conditional) : Base(conditional) {}
   };
 
diff --git a/gtsam/nonlinear/ISAM2Clique.h b/gtsam/nonlinear/ISAM2Clique.h
index 467741d66..9b40c02c6 100644
--- a/gtsam/nonlinear/ISAM2Clique.h
+++ b/gtsam/nonlinear/ISAM2Clique.h
@@ -51,6 +51,7 @@ class GTSAM_EXPORT ISAM2Clique
 
   /// Default constructor
   ISAM2Clique() : Base() {}
+  virtual ~ISAM2Clique() = default;
 
   /// Copy constructor, does *not* copy solution pointers as these are invalid
   /// in different trees.
diff --git a/gtsam/symbolic/SymbolicBayesTree.h b/gtsam/symbolic/SymbolicBayesTree.h
index e28f28764..3fdf1011b 100644
--- a/gtsam/symbolic/SymbolicBayesTree.h
+++ b/gtsam/symbolic/SymbolicBayesTree.h
@@ -39,6 +39,7 @@ namespace gtsam {
     typedef boost::shared_ptr<This> shared_ptr;
     typedef boost::weak_ptr<This> weak_ptr;
     SymbolicBayesTreeClique() {}
+    virtual ~SymbolicBayesTreeClique() {}
     SymbolicBayesTreeClique(const boost::shared_ptr<SymbolicConditional>& conditional) : Base(conditional) {}
   };