diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0ddc96b29a9e8ecbd4496be3475f2d5c680b21ee..8012f3c109746e416690615884edc2b95adcc8db 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -171,7 +171,7 @@ ADD_LIBRARY(${PROJECT_NAME} SHARED ${${PROJECT_NAME}_SOURCES} ${${PROJECT_NAME}_
 TARGET_INCLUDE_DIRECTORIES(${PROJECT_NAME} 
   SYSTEM PUBLIC 
   ${Boost_INCLUDE_DIRS} 
-  ${EIGEN3_INCLUDE_DIRS} 
+  ${EIGEN3_INCLUDE_DIR}
   ${PYTHON_INCLUDE_DIRS} 
   ${NUMPY_INCLUDE_DIRS}
   $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>