diff --git a/gtsam/linear/GaussianFactorGraph.cpp b/gtsam/linear/GaussianFactorGraph.cpp
index 2677c1b7c..3a3d81916 100644
--- a/gtsam/linear/GaussianFactorGraph.cpp
+++ b/gtsam/linear/GaussianFactorGraph.cpp
@@ -18,13 +18,14 @@
  * @author  Frank Dellaert
  */
 
+#include <gtsam/linear/HessianFactor.h>
+#include <gtsam/linear/GaussianFactorGraph.h>
+#include <gtsam/inference/VariableSlots.h>
+#include <gtsam/inference/FactorGraph-inl.h>
 #include <gtsam/base/debug.h>
 #include <gtsam/base/timing.h>
 #include <gtsam/base/cholesky.h>
-#include <gtsam/inference/VariableSlots.h>
 
-#include <gtsam/linear/GaussianFactorGraph.h>
-#include <gtsam/inference/FactorGraph-inl.h>
 
 using namespace std;
 using namespace gtsam;
diff --git a/gtsam/linear/GaussianFactorGraph.h b/gtsam/linear/GaussianFactorGraph.h
index 5b6ef4371..a55b679f6 100644
--- a/gtsam/linear/GaussianFactorGraph.h
+++ b/gtsam/linear/GaussianFactorGraph.h
@@ -26,7 +26,6 @@
 #include <gtsam/base/FastSet.h>
 #include <gtsam/linear/Errors.h>
 #include <gtsam/linear/JacobianFactor.h>
-#include <gtsam/linear/HessianFactor.h>
 #include <gtsam/linear/GaussianBayesNet.h>
 
 namespace gtsam {