diff --git a/gtsam/slam/tests/testSerializationInSlam.cpp b/gtsam/slam/tests/testSerializationInSlam.cpp
index 02b0e3191..6aec8ecb0 100644
--- a/gtsam/slam/tests/testSerializationInSlam.cpp
+++ b/gtsam/slam/tests/testSerializationInSlam.cpp
@@ -16,17 +16,18 @@
  *  @date   February 2022
  */
 
-#include <CppUnitLite/TestHarness.h>
-#include <gtsam/base/serializationTestHelpers.h>
-#include <gtsam/nonlinear/LevenbergMarquardtOptimizer.h>
+#include "smartFactorScenarios.h"
+#include "PinholeFactor.h"
+
 #include <gtsam/slam/SmartProjectionFactor.h>
+#include <gtsam/nonlinear/LevenbergMarquardtOptimizer.h>
+#include <gtsam/base/serializationTestHelpers.h>
+
+#include <CppUnitLite/TestHarness.h>
 
 #include <boost/assign/std/map.hpp>
 #include <iostream>
 
-#include "smartFactorScenarios.h"
-#include "PinholeFactor.h"
-
 namespace {
 static const double rankTol = 1.0;
 static const double sigma = 0.1;