diff --git a/gtsam/discrete/DiscreteMarginals.cpp b/gtsam/discrete/DiscreteMarginals.cpp
index 74da37e73..1a9a986fd 100644
--- a/gtsam/discrete/DiscreteMarginals.cpp
+++ b/gtsam/discrete/DiscreteMarginals.cpp
@@ -21,9 +21,7 @@
 
 #pragma once
 
-#include <gtsam/base/Vector.h>
-#include <gtsam/discrete/DiscreteBayesTree.h>
-#include <gtsam/discrete/DiscreteFactorGraph.h>
+#include <gtsam/discrete/DiscreteMarginals.h>
 
 namespace gtsam {