diff --git a/gtsam/discrete/DecisionTree-inl.h b/gtsam/discrete/DecisionTree-inl.h
index 48da55ce1..ed345461c 100644
--- a/gtsam/discrete/DecisionTree-inl.h
+++ b/gtsam/discrete/DecisionTree-inl.h
@@ -186,7 +186,7 @@ namespace gtsam {
 
     /// If all branches of a choice node f are the same, just return a branch.
     static NodePtr Unique(const ChoicePtr& f) {
-#ifndef DT_NO_PRUNING
+#ifndef GTSAM_DT_NO_PRUNING
       if (f->allSame_) {
         assert(f->branches().size() > 0);
         NodePtr f0 = f->branches_[0];
diff --git a/gtsam/discrete/tests/testAlgebraicDecisionTree.cpp b/gtsam/discrete/tests/testAlgebraicDecisionTree.cpp
index c800321d6..6a3fb2388 100644
--- a/gtsam/discrete/tests/testAlgebraicDecisionTree.cpp
+++ b/gtsam/discrete/tests/testAlgebraicDecisionTree.cpp
@@ -20,7 +20,7 @@
 #include <gtsam/discrete/DiscreteKey.h>  // make sure we have traits
 #include <gtsam/discrete/DiscreteValues.h>
 // headers first to make sure no missing headers
-//#define DT_NO_PRUNING
+//#define GTSAM_DT_NO_PRUNING
 #include <gtsam/discrete/AlgebraicDecisionTree.h>
 #include <gtsam/discrete/DecisionTree-inl.h>  // for convert only
 #define DISABLE_TIMING
diff --git a/gtsam/discrete/tests/testDecisionTree.cpp b/gtsam/discrete/tests/testDecisionTree.cpp
index 14cf307a5..5ccbcf916 100644
--- a/gtsam/discrete/tests/testDecisionTree.cpp
+++ b/gtsam/discrete/tests/testDecisionTree.cpp
@@ -18,7 +18,7 @@
  */
 
 // #define DT_DEBUG_MEMORY
-// #define DT_NO_PRUNING
+// #define GTSAM_DT_NO_PRUNING
 #define DISABLE_DOT
 #include <gtsam/discrete/DecisionTree-inl.h>