diff --git a/unsupported/Eigen/CXX11/Tensor b/unsupported/Eigen/CXX11/Tensor
index 5abd5de1a..1e97ad3c0 100644
--- a/unsupported/Eigen/CXX11/Tensor
+++ b/unsupported/Eigen/CXX11/Tensor
@@ -11,6 +11,8 @@
 //#ifndef EIGEN_CXX11_TENSOR_MODULE
 //#define EIGEN_CXX11_TENSOR_MODULE
 
+#include "../../../Eigen/Core"
+
 #include <Eigen/src/Core/util/DisableStupidWarnings.h>
 
 #include "src/util/CXX11Meta.h"
diff --git a/unsupported/Eigen/CXX11/ThreadPool b/unsupported/Eigen/CXX11/ThreadPool
index 15e5634ed..09d637e9a 100644
--- a/unsupported/Eigen/CXX11/ThreadPool
+++ b/unsupported/Eigen/CXX11/ThreadPool
@@ -10,6 +10,8 @@
 #ifndef EIGEN_CXX11_THREADPOOL_MODULE
 #define EIGEN_CXX11_THREADPOOL_MODULE
 
+#include "../../../Eigen/Core"
+
 #include <Eigen/src/Core/util/DisableStupidWarnings.h>
 
 /** \defgroup CXX11_ThreadPool_Module C++11 ThreadPool Module