diff --git a/gtsam/hybrid/HybridBayesNet.h b/gtsam/hybrid/HybridBayesNet.h
index 263922636..3e07c71ce 100644
--- a/gtsam/hybrid/HybridBayesNet.h
+++ b/gtsam/hybrid/HybridBayesNet.h
@@ -268,10 +268,6 @@ class GTSAM_EXPORT HybridBayesNet : public BayesNet<HybridConditional> {
   /// @}
 
  private:
-  /// Helper method to compute the max product assignment
-  /// given a DiscreteFactorGraph
-  DiscreteValues discreteMaxProduct(const DiscreteFactorGraph &dfg) const;
-
 #if GTSAM_ENABLE_BOOST_SERIALIZATION
   /** Serialization function */
   friend class boost::serialization::access;
diff --git a/gtsam/hybrid/HybridBayesTree.h b/gtsam/hybrid/HybridBayesTree.h
index 06d880f02..ec29f7b1e 100644
--- a/gtsam/hybrid/HybridBayesTree.h
+++ b/gtsam/hybrid/HybridBayesTree.h
@@ -115,6 +115,10 @@ class GTSAM_EXPORT HybridBayesTree : public BayesTree<HybridBayesTreeClique> {
   /// @}
 
  private:
+  /// Helper method to compute the max product assignment
+  /// given a DiscreteFactorGraph
+  DiscreteValues discreteMaxProduct(const DiscreteFactorGraph& dfg) const;
+
 #if GTSAM_ENABLE_BOOST_SERIALIZATION
   /** Serialization function */
   friend class boost::serialization::access;