diff --git a/CMakeLists.txt b/CMakeLists.txt
index 62d292c02..8932fff2a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -122,6 +122,11 @@ set(INCLUDE_INSTALL_DIR
     "The directory where we install the header files"
 )
 
+install(FILES
+  signature_of_eigen3_matrix_library
+  DESTINATION ${INCLUDE_INSTALL_DIR} COMPONENT Devel
+  )
+
 if(EIGEN_BUILD_PKGCONFIG)
     configure_file(eigen3.pc.in eigen3.pc)
     install(FILES ${CMAKE_CURRENT_BINARY_DIR}/eigen3.pc
diff --git a/cmake/FindEigen3.cmake b/cmake/FindEigen3.cmake
index 1d7dbb43d..2c4bb0462 100644
--- a/cmake/FindEigen3.cmake
+++ b/cmake/FindEigen3.cmake
@@ -60,7 +60,7 @@ if (EIGEN3_INCLUDE_DIR)
 
 else (EIGEN3_INCLUDE_DIR)
 
-  find_path(EIGEN3_INCLUDE_DIR NAMES Eigen/signature_of_eigen3_matrix_library
+  find_path(EIGEN3_INCLUDE_DIR NAMES signature_of_eigen3_matrix_library
       PATHS
       ${CMAKE_INSTALL_PREFIX}/include
       ${KDE4_INCLUDE_DIR}
diff --git a/Eigen/signature_of_eigen3_matrix_library b/signature_of_eigen3_matrix_library
similarity index 100%
rename from Eigen/signature_of_eigen3_matrix_library
rename to signature_of_eigen3_matrix_library