diff --git a/CMakeLists.txt b/CMakeLists.txt
index a5d94fc6c9c47df83231da32ffc70653a7e56fd3..a0eb462d6702d22d233d0cc46234f8a69d6e0a91 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -120,6 +120,7 @@ option(OGS_ENABLE_ELEMENT_PYRAMID "Build FEM elements for pyramids." ON)
 if(OGS_USE_LIS)
     add_definitions(-DUSE_LIS)
     include_directories(SYSTEM ${LIS_INCLUDE_DIR})
+    set(OGS_USE_EIGEN ON)
 endif()
 
 if(OGS_USE_PETSC)