diff --git a/include/eigenpy/fwd.hpp b/include/eigenpy/fwd.hpp
index 7ab81e8ca9f4e26db8b51905ac73b2bb3a1b5d77..557fda42e23058f53d8606d1cbd1e480a00fd13f 100644
--- a/include/eigenpy/fwd.hpp
+++ b/include/eigenpy/fwd.hpp
@@ -90,6 +90,7 @@ namespace bp = boost::python;
 
 #ifdef EIGENPY_WITH_CXX11_SUPPORT
 #include <unsupported/Eigen/CXX11/Tensor>
+#define EIGENPY_WITH_TENSOR_SUPPORT
 #endif
 
 #if EIGEN_VERSION_AT_LEAST(3, 2, 90)