diff --git a/gtsam/discrete/DecisionTreeFactor.h b/gtsam/discrete/DecisionTreeFactor.h
index f8679af59..af0df47a2 100644
--- a/gtsam/discrete/DecisionTreeFactor.h
+++ b/gtsam/discrete/DecisionTreeFactor.h
@@ -51,6 +51,7 @@ namespace gtsam {
     typedef std::shared_ptr<DecisionTreeFactor> shared_ptr;
     typedef AlgebraicDecisionTree<Key> ADT;
 
+    // Needed since we have definitions in both DiscreteFactor and DecisionTree
     using Base::Binary;
     using Base::Unary;
     using Base::UnaryAssignment;
diff --git a/gtsam/discrete/TableFactor.h b/gtsam/discrete/TableFactor.h
index 317596ba9..345cbc254 100644
--- a/gtsam/discrete/TableFactor.h
+++ b/gtsam/discrete/TableFactor.h
@@ -94,12 +94,7 @@ class GTSAM_EXPORT TableFactor : public DiscreteFactor {
   typedef std::shared_ptr<TableFactor> shared_ptr;
   typedef Eigen::SparseVector<double>::InnerIterator SparseIt;
   typedef std::vector<std::pair<DiscreteValues, double>> AssignValList;
-  using Unary = std::function<double(const double&)>;
-  using UnaryAssignment =
-      std::function<double(const Assignment<Key>&, const double&)>;
-  using Binary = std::function<double(const double, const double)>;
 
- public:
   /// @name Standard Constructors
   /// @{