diff --git a/gtsam/hybrid/hybrid.i b/gtsam/hybrid/hybrid.i
index 20bff4971..5e93c85a9 100644
--- a/gtsam/hybrid/hybrid.i
+++ b/gtsam/hybrid/hybrid.i
@@ -155,6 +155,8 @@ class HybridBayesNet {
   gtsam::GaussianBayesNet choose(const gtsam::DiscreteValues& assignment) const;
 
   gtsam::HybridValues optimize() const;
+  gtsam::VectorValues optimize(const gtsam::DiscreteValues& assignment) const;
+
   gtsam::HybridValues sample(const gtsam::HybridValues& given) const;
   gtsam::HybridValues sample() const;