diff --git a/gtsam/discrete/DecisionTreeFactor.h b/gtsam/discrete/DecisionTreeFactor.h
index 0b94140da..804b956fe 100644
--- a/gtsam/discrete/DecisionTreeFactor.h
+++ b/gtsam/discrete/DecisionTreeFactor.h
@@ -18,7 +18,6 @@
 
 #pragma once
 
-#include <gtsam/discrete/Signature.h>
 #include <gtsam/discrete/AlgebraicDecisionTree.h>
 #include <gtsam/discrete/DiscreteFactor.h>
 #include <gtsam/discrete/DiscreteKey.h>
@@ -117,10 +116,6 @@ namespace gtsam {
     DecisionTreeFactor(const DiscreteKey& key, const std::vector<double>& row)
         : DecisionTreeFactor(DiscreteKeys{key}, row) {}
 
-    /// Construct from Signature
-    DecisionTreeFactor(const Signature& signature)
-        : DecisionTreeFactor(signature.discreteKeys(), signature.cpt()) {}
-
     /** Construct from a DiscreteConditional type */
     explicit DecisionTreeFactor(const DiscreteConditional& c);