diff --git a/gtsam/nonlinear/tests/testNonlinearConjugateGradientOptimizer.cpp b/gtsam/nonlinear/tests/testNonlinearConjugateGradientOptimizer.cpp
index 76edd3756..9681caff0 100644
--- a/gtsam/nonlinear/tests/testNonlinearConjugateGradientOptimizer.cpp
+++ b/gtsam/nonlinear/tests/testNonlinearConjugateGradientOptimizer.cpp
@@ -19,6 +19,9 @@
 using namespace std;
 using namespace gtsam;
 
+using symbol_shorthand::X;
+using symbol_shorthand::Y;
+
 // Generate a small PoseSLAM problem
 std::tuple<NonlinearFactorGraph, Values> generateProblem() {
   // 1. Create graph container and add factors to it
@@ -84,12 +87,6 @@ TEST(NonlinearConjugateGradientOptimizer, Optimize) {
 
 namespace rosenbrock {
 
-/// Alias for the first term in the Rosenbrock function
-// using Rosenbrock1Factor = PriorFactor<double>;
-
-using symbol_shorthand::X;
-using symbol_shorthand::Y;
-
 constexpr double sqrt_2 = 1.4142135623730951;
 
 class Rosenbrock1Factor : public NoiseModelFactorN<double> {