diff --git a/MaterialLib/SolidModels/LinearElasticOrthotropic.cpp b/MaterialLib/SolidModels/LinearElasticOrthotropic.cpp
index 500e59d7564c36acec08f5efd9b75119754bce56..88fb4fb3fddbe1061f348b5562712b23532c1093 100644
--- a/MaterialLib/SolidModels/LinearElasticOrthotropic.cpp
+++ b/MaterialLib/SolidModels/LinearElasticOrthotropic.cpp
@@ -9,8 +9,6 @@
 
 #include "LinearElasticOrthotropic.h"
 
-#include <Eigen/LU>
-
 #include "MaterialLib/MPL/Utils/GetSymmetricTensor.h"
 
 namespace MPL = MaterialPropertyLib;