--- a/unsupported/test/forward_adolc.cpp
+++ b/unsupported/test/forward_adolc.cpp
@@ -7,12 +7,13 @@
 // Public License v. 2.0. If a copy of the MPL was not distributed
 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-#include "main.h"
 #include <Eigen/Dense>
 
 #define NUMBER_DIRECTIONS 16
 #include <unsupported/Eigen/AdolcForward>
 
+#include "main.h"
+
 template<typename Vector>
 EIGEN_DONT_INLINE typename Vector::Scalar foo(const Vector& p)
 {