diff --git a/gtsam/discrete/AlgebraicDecisionTree.h b/gtsam/discrete/AlgebraicDecisionTree.h
index 828f0b1a2..f2266c758 100644
--- a/gtsam/discrete/AlgebraicDecisionTree.h
+++ b/gtsam/discrete/AlgebraicDecisionTree.h
@@ -33,7 +33,7 @@ namespace gtsam {
    * TODO: consider eliminating this class altogether?
    */
   template <typename L>
-  class GTSAM_EXPORT AlgebraicDecisionTree : public DecisionTree<L, double> {
+  class AlgebraicDecisionTree : public DecisionTree<L, double> {
     /**
      * @brief Default method used by `labelFormatter` or `valueFormatter` when
      * printing.
@@ -127,7 +127,7 @@ namespace gtsam {
         return map.at(label);
       };
       std::function<double(const double&)> op = Ring::id;
-      this->root_ = this->template convertFrom(other.root_, L_of_M, op);
+      this->root_ = DecisionTree<L, double>::convertFrom(other.root_, L_of_M, op);
     }
 
     /** sum */
diff --git a/gtsam/discrete/DiscreteLookupDAG.h b/gtsam/discrete/DiscreteLookupDAG.h
index 8cb651f28..38a846f1f 100644
--- a/gtsam/discrete/DiscreteLookupDAG.h
+++ b/gtsam/discrete/DiscreteLookupDAG.h
@@ -36,7 +36,7 @@ class DiscreteBayesNet;
  * Inherits from discrete conditional for convenience, but is not normalized.
  * Is used in the max-product algorithm.
  */
-class DiscreteLookupTable : public DiscreteConditional {
+class GTSAM_EXPORT DiscreteLookupTable : public DiscreteConditional {
  public:
   using This = DiscreteLookupTable;
   using shared_ptr = boost::shared_ptr<This>;
diff --git a/gtsam/discrete/DiscreteMarginals.h b/gtsam/discrete/DiscreteMarginals.h
index a2207a10b..dc87f665e 100644
--- a/gtsam/discrete/DiscreteMarginals.h
+++ b/gtsam/discrete/DiscreteMarginals.h
@@ -29,7 +29,7 @@ namespace gtsam {
   /**
    * A class for computing marginals of variables in a DiscreteFactorGraph
    */
-class GTSAM_EXPORT DiscreteMarginals {
+class DiscreteMarginals {
 
   protected:
 
diff --git a/gtsam/discrete/DiscreteValues.h b/gtsam/discrete/DiscreteValues.h
index 81997a783..cb17bf833 100644
--- a/gtsam/discrete/DiscreteValues.h
+++ b/gtsam/discrete/DiscreteValues.h
@@ -37,7 +37,7 @@ namespace gtsam {
  * stores cardinality of a Discrete variable. It should be handled naturally in
  * the new class DiscreteValue, as the variable's type (domain)
  */
-class DiscreteValues : public Assignment<Key> {
+class GTSAM_EXPORT DiscreteValues : public Assignment<Key> {
  public:
   using Base = Assignment<Key>;  // base class