From efea6b8cb97a61808083363bf9fd99748ba231b2 Mon Sep 17 00:00:00 2001
From: Frank Dellaert <dellaert@gmail.com>
Date: Thu, 30 Jan 2025 07:57:42 -0500
Subject: [PATCH] DiscreteNet::prune

---
 gtsam/discrete/DiscreteBayesNet.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gtsam/discrete/DiscreteBayesNet.cpp b/gtsam/discrete/DiscreteBayesNet.cpp
index 8c04cb91c..12c607223 100644
--- a/gtsam/discrete/DiscreteBayesNet.cpp
+++ b/gtsam/discrete/DiscreteBayesNet.cpp
@@ -89,7 +89,7 @@ DiscreteBayesNet DiscreteBayesNet::prune(
   DiscreteValues deadModesValues;
   // If we have a dead mode threshold and discrete variables left after pruning,
   // then we run dead mode removal.
-  if (marginalThreshold.has_value() && pruned.keys().size() > 0) {
+  if (marginalThreshold && pruned.keys().size() > 0) {
     DiscreteMarginals marginals(DiscreteFactorGraph{pruned});
     for (auto dkey : pruned.discreteKeys()) {
       const Vector probabilities = marginals.marginalProbabilities(dkey);