diff --git a/cmake/external/onnxruntime_external_deps.cmake b/cmake/external/onnxruntime_external_deps.cmake
index 0aa6b7018777f..b8e90026b4f9a 100644
--- a/cmake/external/onnxruntime_external_deps.cmake
+++ b/cmake/external/onnxruntime_external_deps.cmake
@@ -522,12 +522,7 @@ if(TARGET ONNX::onnx_proto AND NOT TARGET onnx_proto)
   add_library(onnx_proto ALIAS ONNX::onnx_proto)
 endif()
 
-find_package(Eigen3 CONFIG)
-if(Eigen3_FOUND)
-  get_target_property(eigen_INCLUDE_DIRS Eigen3::Eigen INTERFACE_INCLUDE_DIRECTORIES)
-else()
-  include(eigen) # FetchContent
-endif()
+include(external/eigen.cmake)
 
 if(onnxruntime_USE_VCPKG)
   find_package(wil CONFIG REQUIRED)