diff --git a/Eigen/CMakeLists.txt b/Eigen/CMakeLists.txt
index d64b6218f..2a625e748 100644
--- a/Eigen/CMakeLists.txt
+++ b/Eigen/CMakeLists.txt
@@ -21,7 +21,7 @@ IF(CMAKE_COMPILER_IS_GNUCXX)
 ENDIF(CMAKE_COMPILER_IS_GNUCXX)
 
 SET(INCLUDE_INSTALL_DIR
-    "${CMAKE_INSTALL_PREFIX}/include"
+    "${CMAKE_INSTALL_PREFIX}/include/eigen2"
     CACHE PATH
     "The directory where we install the header files"
     FORCE)