tf2_eigen include does not find library Eigen/Geometry

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Hi,

I want to use tf2_eigen to convert geometry_msgs/Vector3 messages (and further geometry_msgs) to eigen-vectors to use them for calculations.

The preprocessor does not find this include in tf2_eigen: #include <Eigen/Geometry>

I deem the reason for this is that eigen3 is installed on my computer and the path should be: <eigen3/Eigen/Geometry>

Do you have an idea how I can handle this problem? I have no permission to change the tf2_eigen file.

Additionaly my CMakeLists.txt

cmake_minimum_required(VERSION 2.8.3)
project(px4_data_observer)
find_package(catkin REQUIRED COMPONENTS
  roscpp
  message_filters
  geometry_msgs
  sensor_msgs
  eigen_conversions
  tf2
  tf2_eigen
)
find_package(Eigen3 REQUIRED)
catkin_package(
)
include_directories(
  include
  ${catkin_INCLUDE_DIRS}
  ${Eigen_INCLUDE_DIRS}
)

Thank you in advanced!